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 UK National Health Service (NHS) is soon expected to roll out free weight-loss Wegovy jab to over a million people in England at risk of heart attacks and strokes.

The move is based on the recommendation of the National Institute for Health and Care Excellence (NICE), which said that overweight people with heart problems, or serious circulation problems in their legs, should have the weekly jab "as an extra layer of protection".

Developed by Danish drugmaker Novo Nordisk, Wegovy is primarily an antidiabetic medication used to treat Type 2 diabetes. People receiving the weight-loss drug Wegovy sustained weight loss for up to four years.

"We know that people who have already had a heart attack or stroke are living with real fear that it could happen again. The evidence from the clinical trial is compelling. It showed that people taking semaglutide alongside their existing heart medicines were significantly less likely to have another heart attack or stroke,” said Helen Knight, from NICE.

"Today's decision gives thousands of people in that situation an extra layer of protection, on top of the medicines they are already taking," she added.

Also read: Foundayo: US FDA Approves Eli Lilly’s GLP-1 Weight Loss Pill

Wegovy and Heart Risk

A November 2023 study, published in the New England Journal of Medicine, elicited a randomized clinical trial of tens of thousands of people, in which Wegovy - alongside existing heart medicines - was linked to a 20% reduced risk of heart attacks and strokes.

Importantly, benefits were seen early in the clinical trial, before significant weight loss occurred, suggesting the drug works directly on the heart and blood vessels, not just through weight loss, as per the NICE

The BBC reported that the UK faces a significant heart disease burden, and every year:

100,000 people get hospitalized due to heart attacks,

100,000 people experience a stroke

350,000 people live with peripheral arterial disease.

Sharon Hodgson, the health minister, said weight-loss drugs were a “gamechanger” and giving them to people at risk of heart attacks and strokes would be a “lifesaver”.

Also read: India To Strictly Inspect GLP-1 Drugs To Curb Misuse: Govt Flags Risks Amid Weight-loss Hype

Wegovy Is Top Weight-Loss Choice for US Teens

Only Wegovy has been approved by the US FDA for children aged 12 and older who are living with obesity. Since the approval in late 2022, the prescriptions have surged.

According to health data company Truveta, which reviewed medical records from 30 US health systems, prescriptions for Wegovy among teens jumped by 50 percent in 2024—rising from 9.9 per 100,000 adolescents in 2023 to 14.8 per 100,000 in 2024.

The first quarter of 2025 showed another increase, with the rate reaching 17.3 per 100,000.

From Europe to Africa to North America to Australia, measles cases are rising across continents. The main driver: declining vaccination rates and immunity gaps.

As of March 26, 1,575 confirmed measles cases were reported in the United States in 2026, according to the latest data published by the US Centers for Disease Control and Prevention.

There have been 16 new outbreaks reported in 2026, and 94% of confirmed cases (1,483 of 1,575) are outbreak-associated (359 from outbreaks starting in 2026 and 1,124 from outbreaks that started in 2025). In 92 percent of cases, measles occurred among those with no vaccination.

Mexico's Ministry of Health recently reported a significant increase in measles cases in 2026, with more than 7,400 confirmed infections recorded since the beginning of the year.

A PAHO report in February shared a 43-fold increase in measles cases across seven countries — Bolivia, Canada, Chile, the United States, Guatemala, Mexico, and Uruguay — with no deaths reported.

Active outbreaks have been reported in London and Birmingham in the UK. In Europe, recurring outbreaks have been reported in Italy, Spain, France and Romania.

A measles alert has also been issued for the Gold Coast area after two cases were confirmed to have been contracted by people overseas and then brought home to Australia.

Earlier this week, Bangladesh reported a measles outbreak that reportedly led to the death of at least 38 children, leading health authorities to roll out a vaccination program for younger children in a bid to halt the outbreak.

Official data show that in 2026, more than 2,300 children were admitted to hospital with suspected measles, of whom 684 have tested positive so far.

Amid these outbreaks, HealthandMe spoke to public health experts to understand whether these cases can increase the risk of the highly contagious disease in India. While India has a better vaccination rate with the Measles and Rubella (MR) Vaccine, some pockets in rural areas may increase the risk.

"In India, the catch-up vaccination drive named Mission Indradhanush was intensified in 2024, successfully rectifying the vaccination gaps that occurred during the COVID pandemic. But the disease can still spread among pockets of the population where vaccination coverage remains low,” Dr. Rajeev Jayadevan, Ex-President of IMA Cochin and Convener of the Research Cell, Kerala, told HealthandMe.

"The proven method to stop measles is to build an 'immunity wall' within the community—by vaccinating at least 95 percent of people—so that the virus repeatedly runs into 'road blocks' and eventually dies out, instead of getting a free ride infecting everyone. When vaccination coverage drops due to many reasons, outbreaks happen, and complications follow," he added.

Also read: Measles In Oahu Visitor Sparks Exposure Risk In Hawaii: Report

What Is Measles?

Measles is a highly contagious virus that spreads through direct contact or through the air when an infected person coughs or sneezes.

Symptoms typically appear seven to 14 days after exposure and may include:

high fever,

cough,

runny nose,

red eyes,

rashes across the body.

Measles And Vaccination

Measles is a vaccine-preventable disease that can cause devastating complications, including blindness, pneumonia, encephalitis, and long-term immune dysfunction.

The reports of deaths from Bangladesh indicate the presence of a significant 'immunity gap,” allowing the virus to take hold, said Dr. Jayadevan. He added that among the unvaccinated, measles is one of the most contagious viruses on Earth—spreading even faster than COVID-19.

Dr Neha Rastogi, Senior Consultant - Infectious Diseases, Fortis Gurugram, told HealthandMe that although the Measles-Rubella (MR) vaccination campaign has played a major role in reducing cases and preventing large-scale outbreaks by building community immunity in India, "there is still some risk of Measles spread in India".

"Although cases have declined significantly, outbreaks can occur due to gaps in vaccination coverage, especially in rural or densely populated areas. Migration, low awareness, and missed immunization doses also contribute to the risk,” she added.

How Does Measles Spread

"Measles spreads rapidly because it is a highly contagious viral disease transmitted through respiratory droplets when an infected person coughs or sneezes," Dr Rastogi told HealthandMe.

She noted that crowded living conditions, poor ventilation, and low immunity levels increase the risk of transmission.

"Lack of awareness, malnutrition (especially vitamin A deficiency), and incomplete or missed vaccination also contribute to outbreaks. The virus can remain active in the air or on surfaces for several hours, making it easy to infect others,” the infectious disease expert said.

The CDC noted that measles transmission may also occur during travel.

"Travelers with fever and other overt signs of transmissible illness, such as coughing or malaise, should be strongly encouraged to delay travel while symptomatic,” it said.

Dr. Jayadevan said that the rising global measles cases are "a reminder that no one is safe until everyone is safe. India must strive to identify those pockets where vaccination coverage is low and undertake intensive corrective measures, taking the community into confidence through effective awareness campaigns".

How To Stay Safe

To safeguard against measles, individuals should ensure timely vaccination, especially for children.

Maintaining good hygiene, such as frequent handwashing and covering the mouth while coughing or sneezing, helps reduce transmission.

Avoiding close contact with infected individuals and ensuring proper nutrition to boost immunity are also important.

Public awareness and community health programs play a crucial role in prevention.

In a disturbing case from the US state of Florida, a pregnant woman in active labor was forced to attend a virtual court hearing via Zoom from her hospital bed for refusing a Cesarean delivery, also known as C-section — a common method of childbirth.

ProPublica reported that Cherise Doyley was in her 12th hour of contractions at the University of Florida Health facility, when she was, without her consent, made to sit in front of a host of people — a judge in a black robe and several lawyers, doctors, and hospital staff — for the Zoom proceeding.

While in active labor, a nurse came in with a bedsheet and told her to cover up, and a supervisor followed with a tablet.

“It’s a real judge in there?” Doyley asked the nurse at the beginning of what would be a three-hour hearing.

What Was The Case?

The mother of three, and a professional birthing doula, Doyley had arrived at the facility after her water broke.

While her doctors expressed concerns about the risk of uterine rupture —a potentially deadly complication for her and her baby — Doyley wanted to try for a vaginal delivery, as the risk was less than 2 percent, unless there was an emergency.

She told doctors she wouldn’t consent to a cesarean without trying to have a vaginal delivery first.

While the doctors initially relented, after several hours, she had to face a virtual court hearing, where the hospital and state attorney’s office forced Doyley to undergo a cesarean section.

Doyley has her own reasons to avoid a C-sec. She already had three prior C-sections, and one that resulted in a hemorrhage. She feared that a C-sec would lead to another serious complication and a lengthy recovery, and her kids would suffer.

However, the hospital was worried that her medical decisions may cause harm to the fetus, and that the courts may help decide which one mattered more, the report said.

Also read: Maternal Vaccination During Pregnancy Can Prevent COVID-related Hospitalization In Babies: Study

After three hours of testimony — all while Doyley lay in her hospital bed — the judge ruled that she could keep laboring unless there was an emergency. If that happened, the hospital could operate, whether she wanted it or not.

Overnight, doctors said the baby’s heart rate dropped for seven minutes. Doyley woke to her hospital bed being wheeled into surgery. The baby girl was delivered by C-section, the report said.

What Happens In A C-section?

It is a surgical procedure that is used to deliver a baby through an incision made in the abdomen and uterus.

The method is preferred, especially in cases with complications during labor or breech presentation, or multiple births.

Unlike the popular conception, it hurts. In a vaginal delivery, the pain is experienced during labor and pushing, especially if done without an epidural.

Whereas, in a C-section, a surgery is performed that numbs the body from the chest down. However, the recovery could be painful and prolonged. It is also because in a C-section, it involves healing from a major abdominal surgery, while vaginal birth recovery may be quicker, more complicated, or traumatic.

Also read: 'Husband Stitch': A Medical Necessity Or Just A Tool To Objectify Women's Bodies?

Does A C-sec Affect The Baby?

Usually, it does not harm the baby, but there could be potential risks to the baby, including:

• Surgical injury, which is very rare; however, the baby may be accidentally nicked during the incision.

• Respiratory issues: Babies born via C-section may have a higher risk of breathing, since they miss the natural compression during the vaginal birth that helps expel the amniotic fluid from their lungs

• Delayed bonding: Immediate skin-to-skin contact may take longer due to the surgical process.
• Feeding challenges: Some newborns may initially struggle with breastfeeding.

Risks Of A C-section Birth?

• Excessive blood loss
• Infection
• Blood clots in the legs, lungs, or pelvis
• Damage to nearby organs
• Adverse reactions to anesthesia

The American College of Obstetricians and Gynecologists (ACOG) advises against elective C-sections due to these potential complications.