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 Union Minister of Health and Family Welfare, JP Nadda, today launched two key national initiatives -- the Strategy for Artificial Intelligence in Healthcare for India (SAHI) and the Benchmarking Open Data Platform for Health AI (BODH) to boost the role of AI in the country's healthcare ecosystem.

The initiatives, launched at the India AI Summit at Bharat Mandapam, in the national capital, are aimed at promoting safe, transparent, and accountable AI in healthcare. It will also help strengthen the digital health ecosystem for equitable healthcare access.

What is SAHI and BODH?

SAHI is a national guidance framework to enable the safe, ethical, evidence-based, and inclusive adoption of AI across India’s healthcare system.

It aims to provide strategic direction on governance, data stewardship, validation, deployment, and monitoring of AI solutions, while supporting States and institutions in responsible adoption aligned with public health priorities.

"SAHI is not merely a technology strategy but a governance framework, policy compass, and national roadmap for the responsible use of AI in healthcare,” said Nadda.

He stated that SAHI will guide India in leveraging AI in a manner that is ethical, transparent, accountable, and people-centric. Nadda also emphasized that SAHI provides a structured framework for collaboration, ensuring that innovation flourishes while public interest remains paramount.

The second initiative, BODH, was developed by the Indian Institute of Technology Kanpur in collaboration with the National Health Authority. It is a privacy-preserving benchmarking platform that enables rigorous evaluation of AI models using diverse, real-world health data without sharing underlying datasets.

As a digital public good under the Ayushman Bharat Digital Mission, it is designed to strengthen trust, transparency, and quality assurance in Health AI deployment.

"The collaboration between Government and academia has led to the development of BODH -- the Benchmarking Open Data Platform for Health AI -- which provides a structured mechanism for testing and validating AI solutions before deployment at scale,” said Nadda.

Nadda reiterated that AI solutions must be rigorously evaluated for performance, reliability, and real-world readiness. Together, SAHI and BODH represent India’s commitment to building a trustworthy, inclusive, and globally competitive health AI ecosystem grounded in innovation, responsibility, and public trust.

AI An Indispensable Enabler to Viksit Bharat

Earlier, delivering the keynote address at a session themed “Innovation to Impact: AI as a Public Health Game-Changer”, at the Summit, Anupriya Patel, Union Minister of State for Health and Family Welfare, highlighted AI as an "All-Inclusive Intelligence".

She also emphasized AI's potential in addressing "health inequities across the country".

Patel called technology -- particularly AI "an indispensable enabler" in India's race towards the vision of a Viksit Bharat by 2047.

She highlighted the potential role of AI on India’s vast and diverse population, the rural–urban divide, and the dual burden of communicable and non-communicable diseases, which present unique challenges.

She also noted that AI has been integrated across the entire continuum of healthcare -- from disease surveillance and prevention to diagnosis and treatment.

While the national capital is seeing a significant rise in H3N2 Influenza A cases, experts explained that it's not just the common cold and people must not try to self-medicate.

Speaking to Health And Me, multiple experts stressed the need to treat the virus properly, as its symptoms can last longer and potentially lead to pneumonia.

What Is The H3N2 Virus?

H3N2 is a subtype of the Influenza A virus that causes seasonal flu. The symptoms are often stronger and more persistent, with many patients reporting prolonged fatigue, cough, breathing difficulty, and slower recovery.

It is highly contagious, spreading via respiratory droplets (coughing/sneezing) and contaminated surfaces. The symptoms usually last 5–7 days, with treatment focusing on rest and symptom management.

Dr. Mohit Saran, Consultant - Internal Medicine and Diabetologist, Manipal Hospital, Gurugram, told this publication: “H3N2 is not just a common cold. While symptoms may not appear instantly, they can lead to high fever, constant cough, body pain, and breathing issues. In some people, this can also increase the risk of pneumonia or the need for hospitalization if not managed early.”

The experts attributed the surge in the disease to factors such as changing weather, fluctuating temperatures and reduced immunity.

Who Is At The Highest Risk For H3N2?

Children, youngsters, senior citizens, pregnant women and people with low immunity or with conditions such as asthma, diabetes, or heart problems are more vulnerable to H3N2. Health care professionals and people who are exposed to crowded places may also be affected by this disease.

Dr. Atul Gogia, Head of Infectious Diseases, Sir Ganga Ram Hospital, told Health and Me that the H3N2 virus "predominantly affects elderly people and those who have comorbid illnesses".

"We need to be especially careful because this illness predominantly affects individuals with comorbid conditions, the elderly, and those who are more vulnerable to developing complications that may require hospitalization,” he said.

Why Does H3N2 Last Longer Than The Common Flu?

Symptoms of H3N2 infection can last for two to three weeks, with a lingering dry cough and fatigue being common.

The virus often affects the lower respiratory tract, leading to more intense coughing and breathing discomfort. Young children, older adults, and individuals with chronic health conditions are at higher risk of complications.

"H3N2 is considered more infectious because of its ability to mutate quickly and adapt to the human host. This high mutation rate allows the virus to evade the immune system more effectively and can lead to more severe outbreaks. It spreads easily through respiratory droplets, direct contact, and contaminated surfaces,” explained Dr. Manisha Arora, Director - Internal Medicine at the CK Birla Hospital(R), Delhi told HealthandMe

"Frequent changes in its surface proteins, a process known as antigenic drift, make it harder for the body to recognize and fight the virus, which can result in more hospitalizations and, in severe cases, increased mortality,”

How Can The Disease Be Prevented?

H3N2 can be prevented through regular handwashing, wearing masks in crowded places, avoiding close contact with people who are sick, and avoiding self-medicating. Flu vaccination, timely medical consultation for long-term fever, and adequate rest help reduce the risk and further spread of the condition.

The experts recommended that all adults above 18 consider annual flu vaccination ideally in August or September, unless they are currently experiencing flu-like symptoms.

Maintaining good hygiene, eating nutrient-rich foods, staying hydrated, and following healthy habits can help boost immunity.

Over 70 residents in Supertech Ecovillage-3, Royal Court Society and Himalaya Pride Society, Greater Noida have contracted food poisoning after they consumed a specific batch of buckwheat (kuttu) flour during Mahashivratri this weekend.

The widespread outbreak has caused panic and triggered a police investigation. As a result, officials sealed Prashant General Store, a retail shop in Royal Court Society and HD Spices, a primary warehouse in Chipiyana Buzurg village suspected of selling the spoiled batch.

Moreover, four people including the warehouse owner have now been detained by the Bisrakh police. Assistant Commissioner of Food, Noida, Sarvesh Kumar said lab tests are yet to confirm whether the infection was due to bacterial contamination, fungal toxins or adulteration.

This incident adds to a troubling trend of food and water contamination in the area, a topic that has recently reached discussions in Parliament. Improper storage allows toxic molds like aflatoxins to grow, triggering rapid-onset vomiting and dehydration, especially on the empty stomachs of fasters.

This "Buckwheat flour poisoning" occurs because the flour's high natural oil content makes it highly perishable; when stored in humid or warm conditions, these oils oxidize, creating a breeding ground for toxic molds and bacteria.

Why Is Buckwheat (Kuttu) Flour Harmful For Your Health?

Despite its reputation as a "pure" fasting food, buckwheat flour carries a hidden risk: its high natural oil content. Unlike refined grains, these healthy fats are highly unstable; when exposed to heat or moisture, they oxidize and turn rancid.

This transformation from a nutrient-dense staple to a source of food poisoning commonly occurs when households treat it like a non-perishable grocery item rather than the sensitive, short-lived ingredient it actually is.

The real danger of buckwheat flour lies in storage. Because buckwheat flour is used sporadically, it often sits in pantries in unsealed packets, warm cupboards or humid environments for months and becomes a silent breeding ground for dangerous molds and bacteria over time

The degradation is often hard to spot; a faint bitter aroma or slightly clumpy texture can easily be hidden by the strong spices and oils used in traditional fasting recipes.

Along with this, expired or damp buckwheat flour can harbor aflatoxins and other toxic compounds beneath the surface. Once ingested, these irritants attack the stomach lining, triggering a rapid physical "rejection," usually within just a few hours.

What Is Buckwheat-Caused Food Poisoning?

• Intense Nausea and Vomiting: Usually the first sign, as the body tries to expel the toxins.
• Acute Abdominal Pain: Sharp cramps or bloating in the stomach area.
• Fever and Chills: A sudden rise in body temperature as the immune system reacts.
• Diarrhea (Loose Motions): Frequent and watery stools.
• Extreme Weakness: Feeling dizzy, shaky, or completely drained of energy.
• Dehydration: Dry mouth and reduced urination due to fluid loss.

How To Safely Store Your Flour

• Buy Small, Buy Fresh: Purchase only the amount needed for the current fasting period. Avoid bulk buying buckwheat flour to store for the next season.
• Check the Date: Always look for the manufacturing date. If it’s more than two months old, it may already be turning rancid.
• Airtight & Cool: Transfer the flour to an airtight glass or metal container immediately. Store it in a cool, dry place, or better yet, refrigerate it to slow the oxidation of its natural oils.
• The "Sensory" Test: Before cooking, smell the flour. If it has a bitter, soapy, or musty aroma, throw it away. Fresh buckwheat flour should have a mild, nutty scent.
• Keep it Dry: Ensure your hands and measuring cups are completely dry before touching the flour, as moisture triggers fungal growth.
• Don't Mix Batches: Never mix new flour with old leftovers from a previous fast.

Who Is At The Highest Risk?

While anyone can get food poisoning, women, children and the elderly are at the highest risk. The practice of fasting can actually make the illness more dangerous. On an empty stomach, even a small amount of mold or bacteria can trigger an explosive physical response.

Furthermore, fasting usually involves lower water intake; once vomiting or diarrhea begins, the body loses its remaining fluid reserves instantly, leading to rapid, severe dehydration.