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.

India’s food safety regulators have stepped up scrutiny on multiple fronts this week. The Food Safety and Standards Authority of India (FSSAI) has tightening packaging rules for pan masala and Maharashtra’s Food and Drug Administration (FDA) taking action against retail outlets over alleged hygiene violations.

From what goes into packaged products to how food is stored and handled before it reaches consumers, these developments come at a time when food safety in India is under tight scrutiny.

FSSAI Bans Plastic And Aluminium Foil In Pan Masala Packaging

Under the new Food Safety and Standards (Packaging) Amendment Regulations, 2026, notified on August 10, pan masala packaging can no longer use plastic-based materials, plastic laminates, aluminium foil or metallised layers.

Pan masala can now be packaged in materials made of paper, paperboard, cellulose and other naturally derived materials, provided they are completely free from plastic and synthetic polymers. Tin and glass containers are also allowed.

The decision follows an earlier draft notification issued by FSSAI in April, which proposed adding specific packaging materials for pan masala to the food packaging regulations.

Also read: Why FSSAI Seized 18,000 Boxes Of Diageo Whisky, Vodka Bottles

Why FSSAI Is Targeting Pan Masala's Packaging?

Pan masala sachets have traditionally relied heavily on plastic and foil materials as they are lightweight, inexpensive and the contents are shielded from moisture.

However, such multilayer plastic packaging is difficult to recycle and contributes to persistent plastic waste. The new rules push manufacturers towards packaging made of paper and other naturally derived materials that won't harm the environment.

This does not mean that pan masala itself safer to consume. Pan masala, particularly those containing tobacco or areca nut, continues to be harmful. The regulation is primarily about packaging standards and waste.

Also read: From Liquor to Dabur to VKC Nuts, FSSAI Crackdown Puts Food Safety in Focus: Why It Matters

Maharashtra FDA Cracks Down On Retail Food Safety

On the other hand, Maharashtra FDA suspended the food license of a Blinkit facility in Malad West after it reportedly found cockroach infestation, improper storage and other hygiene violations that posed health safety dangers.

Officials also flagged expired and damaged products, inadequate pest control, poor waste management and improper food storage practices. The license was suspended under Section 32(3) of the Food Safety and Standards Act, 2006.

The incident highlights why storage conditions matter even when food has already passed manufacturing and packaging checks.

Also read: Why Indian Doctors Are Seeking A Ban On Junk Food Ads And Mandatory Warning Labels On Packaging?

Reliance Retail Outlet Under Investigation Over Kaju Katli Complaint

In a separate case in Buldhana, Maharashtra FDA flagged a Reliance Retail outlet after a consumer complaint alleging fungal growth and live larvae in packaged kaju katli.

Officials inspected the outlet on August 8 and seized 54 kaju katli boxes reportedly. The specific batch mentioned in the complaint was no longer available, while another batch of the same product was found in stock.

These incidents underscore an important point: food safety does not end when a product leaves the factory. Packaging, transportation, storage, pest control, temperature management, expiry checks and hygiene at retail outlets all form part of the food-safety chain.

For consumers, checking the product's packaging, expiry dates, storage instructions and signs of contamination remains important. If a packaged food looks, smells or tastes abnormal, it is safer not to consume it and to report it to the food-safety authority.

England is on the verge of becoming one of the first countries in the world to eliminate hepatitis C, after more than 100,000 people received the life-saving pioneering antiviral drugs through the NHS that was rolled out in 2015.

NHS England said the country has already surpassed the World Health Organization’s target of treating at least 80% of patients diagnosed with hepatitis C. The latest numbers show that 81.5% of people diagnosed with chronic hepatitis C between 2015 and 2024 had started treatment.

Professor Frankie Swords, NHS national medical director, said hepatitis C can cause serious complications including liver failure and cancer. She also said that many people may live with the infection for years without knowing they have it.

“That’s why the NHS has worked hard alongside public health teams and charities to find and treat hidden cases,” she said, adding that England is now “leading the world” on the path to eliminate the disease.

“We are making significant progress towards eliminating Hepatitis C as a public health threat,” said Dr Sema Mandal, Deputy Director – Blood Safety, Hepatitis, STIs and HIV Division at UK Health Security Agency (UKHSA).

She added, "The sharp fall in cases since 2015 shows the impact of expanded testing and sustained access to modern curative treatments, and the commitment of health services and community partners across England."

“Treating over 100,000 people in just 10 years is a remarkable achievement and brings England closer than ever to becoming one of the first countries in the world to eliminate this disease as a public health threat,” Mandal said.

UK's Public Health Milestone

Also read: How Chronic Hepatitis Quietly Progresses To Liver Cirrhosis: Why Early Action Can Save Your Liver

Hepatitis C is a blood-borne virus that primarily affects the liver. If the infection becomes chronic and remains untreated, it may lead to cirrhosis, liver failure and liver cancer. But hepatitis C differs from many other chronic viral infections as it can be cured.

Since 2015, England has significantly expanded access to direct-acting antiviral medicines. These tablets are generally taken for just 8 to 12 weeks and can clear the virus in more than 90% of the patients.

An estimated 50,200 adults were living with chronic hepatitis C in England in 2024, down 61.1% from an estimated 129,000 in 2015.

Deaths linked to hepatitis C have also fallen, with NHS England reporting a 36% reduction over the past decade.

Testing Still Remains Crucial

The biggest challenge for the health officials right now is finding people who do not know they are infected with hepatitis C.

The UKHSA estimates that 84.6% of people living with chronic hepatitis C had been diagnosed between 2015 and 2024. While the number is is encouraging, it still below the WHO target of 90%.

Past or current injecting drug use remains the most important risk factor in England. People who received blood transfusions or blood products before widespread hepatitis C screening was introduced are also considered at risk.

Elimination does not mean that hepatitis C will disappear completely. Under WHO criteria, it means reducing transmission, illness and deaths to very low levels while maintaining strong testing, treatment and prevention systems in public health.

The progress is especially significant because the world is currently far away from WHO’s 2030 viral hepatitis elimination targets. WHO estimates that about 47 million people were living with hepatitis C globally in 2024, while around 240,000 people died from hepatitis C-related causes.

Even as the US faces major outbreaks of Cyclospora and Salmonella infections, the Food and Drug Administration (FDA) has finalized safety guidance for operations handling ready-to-eat (RTE) fresh-cut produce.

The guidance incorporates public comments received on the October 2018 draft and replaces the FDA’s 2008 guidance on fresh-cut produce.

“This guidance represents the agency’s current thinking on the issues related to preventing contamination in fresh-cut produce,” the FDA said.

The agency also encouraged the industry to continue advancing food safety practices, including through best-practice documents tailored to specific commodities and processes.

The FDA’s guidance targets manufacturers and processors of fresh-cut produce and recommends measures such as sanitation controls, supplier verification and refrigeration amid ongoing outbreaks of cyclosporiasis and salmonella linked to fresh produce.

What Does the FDA Guidance Include?

The FDA recommendations are not legally binding and are aimed at manufacturers and processors of products such as chopped lettuce, sliced cantaloupe, diced onions, shredded carrots, coleslaw mixes and fruit salads.

Fresh-cut produce can include a single commodity, such as cut lettuce, sliced cantaloupe, diced celery, diced onions and shredded carrots, or combinations of two or more produce items, such as coleslaw mixes and fruit salads.

The FDA has focused on contamination with pathogens including salmonella, cyclospora, E. coli and listeria.

Fresh-cut produce processors should assess whether these pathogens pose potential hazards that require preventive measures, including supply-chain controls, the FDA said.

The recommended measures include:

• Using safe water
• Washing fruits and vegetables with antimicrobial solutions
• Training personnel
• Improving facility design
• Implementing sanitation controls
• Verifying suppliers
• Maintaining appropriate refrigeration

Why Is Fresh-Cut Produce at Risk?

Fresh-cut produce can be particularly susceptible to contamination because pathogens may be introduced at multiple points, including during growing, transportation, manufacturing, commingling with other products or at retail.

The opportunity for contamination can increase at each stage before the food reaches consumers.

Fresh-cut produce also does not undergo a kill step to eliminate pathogens that may be introduced during these processes, and most products are sold ready to eat.

The guidance provides recommendations and examples of how Preventive Controls for Human Food can be implemented to protect fresh-cut RTE produce from biological hazards.

Cyclospora and Salmonella Outbreaks

The guidance comes as the US investigates outbreaks linked to contaminated lettuce and jalapenos that have sickened thousands of people.

The cyclospora outbreak linked to iceberg lettuce from Taylor Farms has spread to 15 states, with Michigan hit the hardest.

“Americans should feel confident in eating fresh produce, including leafy greens at this point,” Diamantas said during an appearance on CNBC. The FDA said it remains confident that iceberg lettuce linked to the cyclospora outbreak had been effectively removed from the market following the July 17 recall.

The US Department of Health and Human Services also said Tuesday on X: “Cyclospora: contained, American food: safe.”

However, the FDA and CDC say the investigation into the cyclospora outbreak remains ongoing.

Separately, Taylor Farms said Monday that it was recalling prepared foods containing jalapenos from retailers in several states because of potential salmonella contamination.