Mysterious Fog in the US , Canada and UK: A dense, eerie fog with a "burning chemical-like smell" has spooked a good part of North America and parts of the United Kingdom and Canada. With social media amplifying all concerns, this phenomenon has sparked attention across all social media platforms. However, at the heart of this mysterious fog are a conjunction of natural events, social psychology, and environmental conditions that culminated in all the conspiracy theories and public health fears. Here's a closer look at the mysterious fog, its potential causes, and the societal response it has triggered.

Fog that Feeds Fear

The first reports of this "mysterious fog" came in from Florida where a resident said that they experienced respiratory symptoms, feverish warmth, and stomach cramps after contact with the fog. Similar stories started flooding social media, and within a day or two, a sinister force seemed to sweep across the United States, Canada, and parts of the UK. From Texas to Minnesota, people reported weird odors and health issues that they thought were linked to this bizarre atmospheric event.

Some witnesses were said to see "white particles" swirling through the air; theories ranged from a chemical attack or experimental weapon to drone-related chemical dispersals and references to historical military experiments, such as the infamous 1950s "Operation Sea-Spray."

Fuel to the fire were added when videos and posts, hundreds of thousands in number, began circulating on social media sites like TikTok and X (formerly Twitter) speculating on the origin of the fog. Hashtags like #ToxicFog went trending for days. Hysteria created a self-reinforcing loop in which every post spurred further scrutiny and fear.

Scientific Explanation of the Dense Mysterious Fog

1. What is Fog?

Fog is essentially a low-lying cloud formed when the air temperature cools to its dew point, causing water vapor to condense into tiny droplets or ice crystals. Several types of fog—advection fog, radiation fog, and valley fog—can form depending on conditions such as warm, moist air moving over cooler land or when temperatures plummet rapidly under clear skies.

2. Why the Chemical Smell?

Such chemical-like smell as reported during the occurrence of fog events is sometimes attributed to air pollution. It acts like a sponge, where it absorbs these pollutants, which include sulfur dioxide and nitrogen oxides, among others, that emit from industries. This mixture, therefore, leads to a stench that could be mistaken as unnatural or even toxic.

Also Read: Health Concerns Rise As US, Canada, and UK Come Under The Blanket Of Thick, Dense, Toxic Fog

3. What are the Health Concerns?

High moisture levels from fog can significantly exacerbate symptoms related to respiration, but especially in already predisposed asthmatics and allergy patients. The connection of these symptoms with actual fever, stomach cramps, and puffy eyes is too remote. Experts assume that the irritating effects of entrapped pollutants trapped in fog tend to affect more the eyes and throat rather than the rest of the body affected by some report.

Psychological Effects of Mass Panic Caused by Social Media

Social media amplified a natural weather event into a health epidemic. It made the personal experience of individuals become a cause for fear and speculation, a domino effect.

According to psychologists, this is a concept of selective perception, wherein once people's attention is drawn to environmental anomalies, they begin to notice them. This mirrors earlier panics, such as the Seattle windshield pitting panic of 1954. Then, atomic bomb testing caused fear in many and started to have people looking at their windshields for small marks that they had not seen before. Likewise, postings on the strangeness of the fog probably increased public awareness and suspicion, with people looking to attach unrelated symptoms to the phenomenon.

The fog hysteria shares a commonality with other instances of mass panic, such as the "drone sightings" of recent years or the Cold War-era fears of biological warfare.

Also Read: Mysterious Fog Is Making Americans Sick

These events underscore how fear can cloud judgment, especially when amplified by social media and sensationalist headlines. While historical cases, such as "Operation Sea-Spray," offer concrete evidence of the existence of unethical experiments, the jump from a natural weather condition to theories of chemical attacks exemplifies a more modern trend of connecting unrelated dots, all wonderfully seeded in distrust and anxiety.

Despite the swirling rumors, meteorologists and scientists are in agreement that the mysterious fog is not as alarming as it seems. It is well known that fog traps and amplifies pollutants, especially in urban and industrial regions. Moreover, winter months are the most conducive for fog formation, so its recent prevalence is unsurprising.

On the other hand, environmentalists advise that the fog should wake everyone up to increased levels of pollution. The reported odors and health irritations could be just symptoms of far deeper systemic issues like industrial emissions and lack of control over air quality.

The authorities must be transparent in their communication to combat misinformation and allay public fears. Governments and environmental agencies must provide timely updates on weather phenomena, air quality, and health risks. Initiatives like real-time pollutant tracking and public education campaigns can help demystify natural occurrences while addressing valid environmental concerns.

The mysterious Canada fog is a compelling case study in how environmental events intersect with psychology and societal dynamics. While rooted in natural phenomena, the fog became a vessel for collective fears, amplified by modern technology and historical anxieties.

In this information era where communication occurs at an almost lightning pace, the fog becomes a metaphor that reminds everyone about scientific literacy, environmental responsibility, and an effective balance when considering public concern. Whether perceived as a marvel of nature or as a tale that serves to teach, it left a very powerful mark in people's minds.

The new variant of COVID-19 has hit parts of Asia, cases have surged in Hong Kong and Singapore, and Thailand too has reported new cases. Amid all this, in India too, health authorities are monitoring the cases closely. While the numbers remain low, as compared to previous wave of COVID-19, certain Indian cities have reported low, but significant surge in infections.

Two mild cases of Covid-19 have been reported in Gurgaon— a 62-year-old man and a 31-year-old woman, both recently returned from Mumbai. District health officials, including Chief Medical Officer Dr. Alka Singh, assured that there’s no reason for alarm as both are in home isolation and recovering well.

“This is now an endemic. Many with symptoms may test positive, but there’s no cause for panic,” Dr. Singh told reporters on Thursday.

Meanwhile, a 28-year-old security guard from Faridabad tested positive at Delhi’s Safdarjung Hospital during treatment for similar symptoms. None of the three individuals have recent foreign travel history or contact with known Covid-positive persons. Variant identification is pending further lab testing.

Maharashtra

In May, Mumbai has reported 95 new cases of COVID-19. This has put the state's total number to 106 since January. The data is corroborated by the Maharashtra Health Department.

Currently, at least 16 people are hospitalized, and most have been shifted from KEM Hospital to Seven Hills Hospital to curb the transmission. Authorities have also increased testing all patients with influenza-like illness (ILI) or with severe cute respiratory infection (SARI). The same patients are now being tested for COVID-19.

Pune too is on high alert, though there are no active cases at the moment. The municipal officials have reserved 50 beds at Naidu Hospital as a precautionary measure. Dr Nina Borade, who is the health chief at Pune Municipal Corporation said, "We had only one patient in May - an 87-year-old from Manjari - who has since fully recovered," as reported by TOI.

Dr Borade also noted that tests are not being conducted at any civic hospitals, however, the guidelines will be updated, as and when it is required.

Tamil Nadu

There has been a surge in cases in Tamil Nadu, with 12 new COVID-19 cases being reported in Puducherry. In Chennai too, doctors have reported a shift where fevers which were previously linked with influenza are now being linked to COVID-19.

There is also a rise of COVID-19 cases among viral cases, and many of the patients who may have been diagnosed with influenza A or B, are now being checked for COVID-19 cases.

TOI reported that the public health director Dr TS Selvavinayagam has told the public to not panic, however, he has urged them to remain cautious when in crowded spaces.

Karnataka

At this moment, Karnataka has confirmed 16 active cases of COVID-19. The data is corroborated by the state health minister Dinesh Gundu Rao.

ALSO READ: Covid Cases Surge In Singapore: What Do We Know About The New Variant On The Loose?

Gujarat

Seven cases as of now are detected in Ahmedabad. All these cases were detected on a single day, which made the city to witness an unusual spike in just one day, that has averaged just one cases per month over the past year.

The 7 patients are kept in home isolation, and authorities have sent their samples for genomic testing.

The state health officials on Thursday confirmed that among the 15 active cases in Gujarat, all of them are milder Omicron JN.1 variant.

Singapore And Hong Kong

As per the Ministry of Health, Singapore, the spike in cases is attributed to the new variant which may be on the loose - LF.7 and NB.1.8. These two are descendants of the JN.1 variant.

The cases have also spiked in Hong Kong. Thus Hong Kong's Centre for Health Protection (CHP) said that the rising COVID activity reached a 1-year high and have urged people to take precautions and receive an initial dose of COVID vaccine as soon as possible.

The Ministry of Health, Singapore, informed, ""LF.7 and NB.1.8 are the main Covid-19 variants circulating in Signapore." They are the descendants of the JN.1 variant that is used in COVID-19 vaccines.

What are The Symptoms Of This New Variant?

The symptoms which are associated with this current Covid wave are a bit different from what we have seen before. While cough and sore throat are there, the symptoms also include nausea, vomiting, brain fog, and conjunctivitis.

The symptoms however are mild. The experts have for now asked people to monitor their health and seek medical attention in case it is required.

A new, not binding legally, 69-page long document was released on Thursday by the US Department of Health and Human Services (HHS), titled Make America Healthy Again. The report revealed the health priorities of Secretary Robert F Kennedy Jr and has stirred debate across medical and agricultural communities. The report is expected to guide health policies during the remaining term of President Trump's term. The report has, as expected questioned vaccine safety, and brought the spotlight to the dangers of ultra processed foods.

Vaccine Under The Microscope

The report has called for heightened scrutiny of childhood vaccine schedule. It has also raised concerns about mandatory school vaccinations and the lack of placebo-based trials. While vaccines has been credited for a long time for eliminating deadly diseases like measles and polio, Kennedy has remained a vaccine skeptic. He has further suggested an investigation. As the US News also reports, this report has been criticized by Dr Amesh Adalja of Johns Hopkins for presenting a report without any scientific evidence that links vaccine to rising conditions like autism or obesity.

“It’s not as if they’re positing any kind of causal link,” Adalja said. “Kennedy is trying to devalue vaccines in the minds of Americans.”

The report also notes to limit access to COVID-19 shots.

Chemical Safety In Food

Farming chemicals, particularly glyphosate—a widely used herbicide—are another focal point. The report cites World Health Organization findings that label glyphosate a probable carcinogen, although the EPA disputes this. Critics, including the National Corn Growers Association, condemned the report for spreading fear without solid evidence.

Yet, MAHA supporters like Dave Murphy, as US News reported, argue the report doesn’t go far enough in addressing pesticide-related health issues, warning of potential political consequences if the concerns are overlooked.

Ultra-processed Foods and Poor Nutrition

The strongest health key point that the report highlights is the industry of ultra-processed foods. This accounts for about two-thirds of American children and teens' diets. These foods are rich in sugar, refined grains, and additives. They are linked with chronic conditions like obesity, diabetes, and many more. As the US News reports, Dr. Dariush Mozaffarian of Tufts University called the report a “pretty accurate depiction” of America’s nutrition crisis.

The report urges the National Institutes of Health to conduct wide-scale studies on these products. However, the call comes amid proposed budget cuts of $18 billion to NIH, raising concerns about how this research will be funded.

Physical Inactivity And Over Medication

Kennedy’s report also flags concerns about overprescription in children, including common medications like antibiotics and ADHD treatments. It argues that children are “overmedicated and undernourished,” and that even the use of everyday painkillers should be reconsidered.

Additionally, the report laments the declining levels of physical activity among American youth, framing it as a contributor to the rise in chronic disease.

Agriculture Secretary Brooke Rollins acknowledged the challenges of satisfying both health advocates and industry stakeholders. The report attempts to balance these perspectives, though some in the administration remain wary of adopting stricter regulations.

For the first time, West Nile virus has been identified in mosquitoes in the United Kingdom, according to the UK Health Security Agency (UKHSA). The virus, spread mostly through mosquito bites, can lead to serious neurological disease in exceptional circumstances. Partial detection of the virus was made in Aedes vexans mosquitoes from Nottinghamshire wetlands during routine monitoring in July 2023. No human infections have been reported in the UK, but scientists attribute the outbreak of the virus to changing climate conditions favorable for the transmission of mosquito-borne diseases.

While the danger to the wider population is presently estimated as "very low," officials contend the emergence of the virus in the region marks a watershed in the way climate change and globalization are recasting the map of infectious disease in temperate nations such as Britain.

The finding was made in July 2023 when scientists from the UKHSA and the Animal and Plant Health Agency (APHA) found pieces of West Nile virus in Aedes vexans mosquitoes sampled in wetlands along the River Idle in Nottinghamshire. Although no cases of local human infection have so far been reported, the finding is medically and scientifically significant.

This is the initial West Nile Virus detection in mosquitoes in the UK to date, but it is not surprising as the virus is already well established in Europe," said Dr. Meera Chand, UKHSA Deputy Director for Travel Health and Infections.

The mosquitoes that are infected are indigenous to the UK, but the virus itself—historically resident in warmer climates—has now discovered a route northwards, probably aided by rising temperatures and changing ecosystems.

What is West Nile Virus?

West Nile virus is a flavivirus that is mainly transmitted through the bites of infected mosquitoes. Mosquitoes acquire the virus through feeding on infected birds and transmit it to humans and horses.

Although most WNV infections are asymptomatic or present with mild flu-like symptoms, around 20% of infected individuals develop fever, headaches, skin rash, or joint pain. The disease can have more serious consequences in around 1 in 150 cases, developing into life-threatening neurological syndromes like encephalitis (inflammation of the brain) or meningitis.

There is no specific treatment or human vaccine available for WNV at present. Patients usually recover completely, but some can develop long-term consequences following severe infection.

How Does Climate Change Affect Disease Migration?

The appearance of WNV in British mosquitoes is a trend within a larger movement, and that movement is driven by climate change. As temperatures increase and rain patterns shift, the UK and other temperate climates are becoming increasingly welcoming to mosquito species previously limited to warmer climates.

Experts note that similar phenomena have already occurred with diseases like tick-borne encephalitis, which was recently detected in parts of the UK where it had not been previously endemic.

UKHSA’s Role and Public Health Surveillance

While no evidence yet suggests that WNV is circulating widely in UK bird or mosquito populations, the UKHSA has taken steps to prepare. They’ve issued guidelines for healthcare professionals to test patients presenting with unexplained encephalitis for West Nile virus.

Surveillance systems such as those utilized by the UKHSA and APHA play a crucial role in sending out early warnings, aiding in guiding public health measures and safeguarding communities. These systems track the activity of mosquitoes, monitor bird migration patterns, and identify likely outbreaks, providing a first line of defense against new health risks.

How You Can Protect Yourself?

Wherever you are in the UK or visiting regions where mosquito-borne diseases are prevalent, personal protection is still the best defense. Here's how you can minimize your risk:

Dress wisely: Avoid short sleeves and shorts, particularly around wetland or forest environments.

Use repellents: Insect repellents with DEET or Picaridin have been shown to repel mosquitoes.

Secure your environment: Close windows and doors or fit screens to prevent mosquitoes from entering.

Eliminate breeding sites: Drain standing water from gardens, pots, and gutters where mosquitoes can lay eggs.

Be travel-aware: If traveling to areas that are known to have WNV—like regions in Europe, Africa, the Middle East, and the Americas—exercise extra care and monitor health advisories.

Check for ticks: When outside in grassy or wooded areas, perform a complete body scan for ticks that can also spread other infections.

The finding of West Nile virus in UK mosquitoes is not yet a public health crisis, but it is a wake-up call of absolute importance. With climate change disrupting ecosystems and wildlife habits, novel and previously extrinsic pathogens are gaining fertile ground in territories that were once thought safe.