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.

With the patent on semaglutide expiring today in India, NATCO Pharma has become the first drugmaker to launch the generic version of the weight-loss drug in the country.

NATCO Pharma’s generic semaglutide injection prices start at INR 1,290 per month.

“NATCO is the first company to offer generic semaglutide in multi-dose vials with customized syringes… It is the most affordable GLP-1 currently in the Indian market as it is approximately 70 percent cheaper in cost than the pen device and 90 percent cheaper than the price of the innovator’s brand,” the Hyderabad-based company said, in a statement.

The company had received approval from the Central Drugs Standard Control Organization (CDSCO) in February 2026 to manufacture and market the drug, after a clinical comparison study.

Semaglutide works by targeting key areas of the brain involved in appetite regulation and food intake. It reduces hunger, improves satiety, and cuts down food cravings, eventually inducing weight loss.

It also improves insulin resistance and has a beneficial effect on the reduction of cardiometabolic events and risk factors.

NATCO's Semaglutide Drugs

NATCO's semaglutide drugs will be sold under brand names SEMANAT and SEMAFULL in multi-dose vial formats. It will be priced:

• INR 1,290 per month for the 2 mg/1.5 ml and 4 mg/3 ml variants,
• INR 1,750 for the 8 mg/3 ml dose.

• INR 4,000 for 2 mg/1.5ml,
• INR 4,200 for 4 mg/3 ml,
• INR 4,500 per month for 8 mg/3 ml.

In comparison, Novo Nordisk's Ozempic and Wegovy in pen devices cost INR 8,800 and INR 10,850, respectively, per month for the starting doses.

NATCO has also signed a distribution partnership with Eris Lifesciences to co-market its therapy in India.

Other Generic Versions

Sun Pharmaceutical Industries, Dr. Reddy’s Laboratories, and Zydus Lifesciences are also expected to introduce their versions of semaglutide on Saturday.

Others in the pipeline include Alkem Laboratories, Torrent Pharmaceuticals, and MSN Laboratories.

With intense competition, analysts believe around 50 branded semaglutide generics will enter the Indian market within months, BBC reported.

Calling it a potential "magic-pill moment" for India, investment bank Jefferies predicted that the semaglutide market in the country could reach $1bn domestically.

Also read: CDSCO threatens action against pharma companies for promoting GLP-1 weight-loss drugs

End Of Novo Nordisk’s Patents

In January this year, Canada became the first country to lose patent protection for semaglutide. However, the country's health regulator hasn’t approved any generics so far.

Novo Nordisk is expected to lose the patent in 10 more countries, including Brazil, China, South Africa, Turkey, and Canada, by the end of 2026.

In view of losing patent, Novo Nordisk recently cut prices for Wegovy in India. The company also launched its blockbuster brand Ozempic in December.

Once affecting people who smoked tobacco, lung cancer in India is today more common among people who never smoked. The major reason: exposure to poor air, almost year-round.

Although air pollution has emerged as an important risk for lung cancer, the evidence on this issue from India is limited. To explore more on this, the All India Institute of Medical Sciences, Delhi, today announced undertaking a major study.

The study, dubbed ‘AIRCARE (Air Pollution and Cancer Research Ecosystem): Center for Advanced Research on Environmental Health and Lung Cancer Risk’, will examine the connection between the fine particulate matter 2.5 (PM 2.5) and the risk of lung cancer in the country.

PM2.5 particles, with a diameter of 2.5 micrometers or less, are approximately 30 times smaller than a human hair. It is a significant yet often unseen threat to air quality.

“India is home to some of the most polluted cities in the world, and there is an urgent need to scientifically look at the effects of pollution on people’s health. Lung cancer is one of the most common cancers among males in India, and there is a high number of non-smoking lung cancers among females and young adults,” said Dr. Abhishek Shankar, Assistant Professor, Radiation Oncology at AIIMS, who will lead the study, while addressing the media.

“It is deeply concerning that lung cancer, once assumed to be a disease mostly associated with people who smoke tobacco, is now seeing a rapid increase in incidence amongst people who do not smoke,” he added.

The expert urged the "need to implement policy and management strategies to tackle this disease and mitigate further loss of life”.

The AIRCARE Study

It will be the first-of-its-kind scientific study in India to evaluate the effects of exposure to air pollution.

About 1,615 lung cancer cases with 1,615 controls from their family members will be added to the study.

The study will employ both a cohort and case-control design to track the effects of chronic PM 2.5 exposure on lung cancer incidence across various demographics and socio-economic groups.

It will also attempt to isolate an Indian population-specific genetic imprint.

Based on the findings, the researchers aim to develop a risk- based screening model that will include both clinical and molecular components specific to the Indian population and exposure levels.

It will also identify the susceptible population among the cohort who are more at risk of developing lung cancer.

Lung Cancer And Air Pollution Risks In India

Data from the National Cancer Registry shows that lung cancer affects about 72,000 people and claims 66,000 lives every year in India -- making it one of the leading causes of cancer mortality in the country.

From a smoker’s illness, lung cancer has now emerged as a major concern due to poor air quality. Several doctors across Delhi and Maharashtra have n noted a significant increase in pulmonary cancer due to air pollution.

A 2025 study at a government hospital in North India found that 52 percent of lung cancer cases were among non-smokers.

The Indian government today constituted the National Dental Commission (NDC), in a major reform to improve the quality of dental education in the country and align it with global standards, said the Ministry of Health and Family Welfare, on the occasion of World Oral Health Day.

The government also announced three autonomous boards under the NDC and repealed the erstwhile Dental Council of India (DCI). The developments were notified on March 19, making the new framework operational from the same date, the Ministry said in a statement.

The NDC aims to introduce essential and long-overdue regulatory reforms in dental education and enhance access to affordable oral healthcare across the country.

The three autonomous bodies aim to support the functioning of the Commission. These are:

• Undergraduate and Postgraduate Dental Education Board -- to oversee dental education
• Dental Assessment and Rating Board -- to regulate accreditation and institutional assessment
• Ethics and Dental Registration Board -- to govern professional conduct and registration of dentists

The key functions of the National Dental Commission includes:

• Framing regulations to implement the provisions of the Act
• Conducting rating and assessment of dental institutions
• Evaluating human resources and promoting dental research
• Framing guidelines for fee regulation in private dental colleges
• Establishing standards for community dental care, education, research, and professional ethics

World Oral Health Day

Every year on March 20, World Oral Health Day is observed to empower people with the knowledge, tools and confidence to secure good oral health.

The 2026 theme is “A Happy Mouth is a Happy Life” raises awareness about the importance of caring for your mouth at every stage of life - from birth through later years.

"Healthy Mouth, Healthy Nation. This World Oral Health Day, let’s raise awareness and take action, practice proper brushing, reduce sugar intake, and prioritize regular dental check-ups. Your smile deserves daily care," the Ministry of Health shared in a post on social media platform X.

Also read: World Oral Health Day: Your Mouth May Signal Disease Before You Even Know, According To Doctor

"A healthy mouth is essential for a healthy body. This World Oral Health Day, let’s focus on building better habits for ourselves and our families," said Union Health Minister JP Nadda.

He called for building up "simple steps like proper brushing, limiting sugary foods, and regular dental check-ups" to maintain good oral health.

"Good oral care not only keeps our smile bright but also supports overall well-being. Let’s use this occasion to raise awareness and commit to maintaining good oral hygiene every day," he added.