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.

CDC Travel Advisory: The US has warned travelers to be careful if they plan to visit the Seychelles islands anytime soon. The island is located in northeast of Madagascar and is known for its secluded beaches. As per the Centers for Disease Control and Prevention (CDC), a 'Level 2' advisory for the island has been issued and travelers have been asked to 'practice enhanced precautions' if they do plan to visit.

CDC Travel Advisory: Why Did US Issue Health Warning?

The warning has been issue in response to an outbreak of chikungunya, which is a viral disease that could spread to humans by mosquitoes.

A Level 2 travel advisory has been issued, which means the travelers are expected to practice enhanced precautions as compared to a Level 1 advisory that only asks travelers to practice usual precautions.

In more serious cases, Level 3 advisory is issued that asks travelers to reconsider non-essential travel, whereas a Level 4 advisory asks travelers to avoid all travel.

Read: Chikungunya Spreads Across Tamil Nadu: All You Need To Know

CDC Travel Advisory: What Is Level 2 Health Warning?

As CDC issues travel advisory, here is what travelers are expected to do:

• Travelers are expected to protect themselves by preventing mosquito bites, which includes using insect repellent, wearing long-sleeved shirts and pants, and staying in places where air conditioning or that have screens on the windows and doors
• The CDC also tells travelers to get vaccinated for those who are visiting the area affected by a chikungunya outbreak
• If a traveler is pregnant, they are asked to reconsider travel to affected area, especially if they are closed to delivering their baby. Mothers infected around the time of delivery can pass the virus to their baby before or during delivery. Newborns infected in this way or by a mosquito bite are at risk for severe illness, including poor long-term outcomes
• If someone has a fever, joint pain, headache, muscle pain, joint swelling, or rash during or after the travel, they must seek medical care

CDC Travel Advisory: Which Other Places Got The Chikungunya Level 2 Notice

From September 26, 2025 to February 11, 2026, the CDC issued travel advisory against five places for Chikungunya, which includes:

• Bolivia: There is an outbreak of chikungunya in Santa Cruz and Cochabamba Departments
• Seychelles: Notice details mentioned above
• Suriname
• Sri Lanka
• Cuba

CDC Travel Advisory: What Is Chikungunya?

This is a disease that is transmitted from mosquitoes to humans and affects many people in the world. Found in densely populated countries and continents, like Africa, Asia and the tropics of the Americas, this has severe symptoms. This viral disease is caused by the Chikungunya virus of the Togaviridae.

First identified in the United Republic of Tanzania in 1952 and subsequently in other countries like Africa and Asia. Since 2004 the outbreak of CHIKV virus has become more widespread and caused partly due to the viral adaptations allowing the virus to be spread more easily by Aedes albopictus mosquitoes. The transmission has been noted to persist in countries where there is a large population, but interestingly, the transmission has been interrupted on islands where a high proportion of the population is infected and then immune.

CDC Travel Advisory: Symptoms of Chikungunya

The onset of the disease is usually in 4-8 days and after a bite of an infected mosquitoes, it is characterized by an abrupt onset of fever and then joint pain. This joint pain is severed and lasts for a few days but may prolong for months maybe even years. Other signs are joint swelling, muscle pains, headache, nausea, fatigue and rash.

In a now viral video from Trustified, an independent testing platform, food testers claim that Amul Taaza and Gold milk pouches contain coliform bacteria levels 98 times higher than FSSAI’s prescribed limits.

Additionally, Mother Dairy and Country Delight milk pouches showed total plate count levels far above safe thresholds. Total plate count (TPC), also known as Aerobic plate count (APC), measures viable microbial contamination, with lower levels indicating better quality.

Last month, the agency also claimed that the Amul Masti Dahi sold in pouches showed high coliform bacteria, yeast and mold, while tetrapack milk and dahi sold in cups passed quality checks.

However, Amul has aggressively dismissed these allegations, citing them to be fear-mongering and noting that all of its products meet safety standards. Instead of manufacturing failure, the company has pointed to possible breaks in the cold chain at the retail or distribution level.

What Is Coliform Bacteria?

According to ScienceDirect.com, coliform bacteria are rod-shaped, gram-negative bacteria that do not form spores. They may or may not be able to move and they can break down lactose to produce acid and gas when grown at 35–37°C.

E. coli is a specific type of coliform bacteria that lives in the intestines of humans and animals and can cause infections in your gut, urinary tract and other parts of your body.

Coliform bacteria typically doesn't cause serious illness but if high amounts of coliform bacteria are found, it suggests that harmful germs from feces, like bacteria, viruses or parasites, may also be present.

Certain strains of coliform bacteria can make you sick with watery diarrhea, vomiting and a fever, according to Cleveland Clinic.

In many Indian milking setups, milk is extracted by hand and there is a high possibility that cows' udders are not being cleaned thoroughly before extracting milk from them, making it easy for bacteria in the cow dung to contaminate milk.

Why Is Milk Pasteurization Necessary?

Developed by Louis Pasteur in the 19th century, pasteurization is a critical food safety process that involves heating liquids, most commonly milk but also juice, eggs and beer, to a specific temperature for a set period to destroy harmful bacteria, viruses, and pathogens including E. coli, Campylobacter, Listeria, and Salmonella.

This process significantly reduces the risk of foodborne illnesses such as typhoid, tuberculosis, and listeriosis without significantly altering the nutritional value or taste of the product.

In most milk processing plants, chilled raw milk is heated by passing it between heated stainless-steel plates until it reaches 161 degrees Fahrenheit. It’s then held at that temperature for at least 15 seconds before it’s quickly cooled back to its original temperature of 39 degrees.

Pasteurization is essential for children, pregnant women and the immunocompromised, as it prevents infections that can cause severe complications, including miscarriage or death.

Unlike sterilization, pasteurization does not destroy all microorganisms, which is why pasteurized milk must be kept refrigerated.

John Lucey, a food science professor at University of Wisconsin-Madison, notes: "Pasteurization is an absolutely critical control point for making dairy products safe. There really isn’t another single aspect that is as important as it is. If there is a pathogen or anything in the milk that we don’t want, pasteurization destroys it. It is our industry’s shield."

American skier Lindsey Vonn told fans she is "making progress" after undergoing a successful third surgery for her broken left leg she suffered during the women’s Winter Olympics 2026 downhill over the weekend in Milan Cortina, Italy.

She was in pursuit of becoming the oldest Alpine skier, man or woman, to win an Olympic medal at the Winter Olympics 2026 in Milan, Italy, However, her dream came to an end after she crashed only 13.4 seconds into the downhill final and ended up with the life-changing injury.

The 2010 Winter Olympic gold medalist wanted to create a new record despite skiing in a brace merely nine days after rupturing the ACL in her left knee.

In a sentimental Instagram post, Vonn wrote: "I had my 3rd surgery today and it was successful. Success today has a completely different meaning than it did a few days ago. I’m making progress and while it is slow, I know I’ll be ok.

"Thankful for all of the incredible medical staff, friends, family, who have been by my side and the beautiful outpouring of love and support from people around the world. Also, huge congrats to my teammates and all of the Team USA athletes who are out there inspiring me and giving me something to cheer for."

The day after her debilitating crash, a devastated Vonn took to Instagram and told her followers: "My Olympic dream did not finish the way I dreamt it would. It wasn't a story book ending or a fairy tale, it was just life. I dared to dream and had worked so hard to achieve it.

"Because in Downhill ski racing the difference between a strategic line and a catastrophic injury can be as small as 5 inches.

"I was simply 5 inches too tight on my line when my right arm hooked inside of the gate, twisting me and resulted in my crash. My ACL and past injuries had nothing to do with my crash whatsoever. Unfortunately, I sustained a complex tibia fracture that is currently stable but will require multiple surgeries to fix properly.

"While yesterday did not end the way I had hoped, and despite the intense physical pain it caused, I have no regrets. Standing in the starting gate yesterday was an incredible feeling that I will never forget.'

READ MORE: Lindsey Vonn Airlifted With Broken Leg After ACL Injury Mid-Winter Olympics 2026

What Happened To Lindsey Vonn?

The 41-year-old American lost control over the opening traverse after cutting the line too tight and was spun around in the air, according to AP.

Vonn was heard screaming on camera after the crash while being surrounded by medical personnel. After being examined on site, she was strapped to a gurney and flown away by a helicopter, possibly ending the skier’s championship-packed career.

Vonn’s sister Karin Kildow said Vonn “put her whole heart” into making the Olympics. “That’s definitely the last thing we wanted to see,” Kildow told NBC. “When that happens, you’re just immediately hoping she’s OK, and it was scary. When you start to see the stretchers being put out, it’s not a good sign. She dared greatly, and she put it all out there.”

According to supplier Dainese, a mandatory safety air bag had inflated under Vonn’s racing suit during the crash. The air bag, which is triggered by a complicated algorithm when racers lose control, is expected to have softened her fall.

The US Ski Team later assured that Vonn is in stable condition and the Ca' Foncello hospital confirmed she is undergoing surgery to stabilize a fracture in her left leg.

Vonn's teammate and this year's gold medalist, Breezy Johnson later said of the crash: "To have this course burn you and to watch those dreams die, it was one of the most heartbreaking moments of my life.

"It’s not the physical pain, we can deal with physical pain, but the emotional pain is something else. I wish her the best and I hope that this isn’t the end."

What Is An ACL Injury?

The Anterior Cruciate Ligament (ACL), a vital ligament in your knee that connects the femur, or thighbone, to the tibia, or shinbone, is crucial for maintaining your stability and agility when playing sports. However, it is also among the most susceptible to harm.

An ACL rupture is basically described as a tear in the ligament that typically occurs in sports that involve quick changes in direction, such as basketball, soccer and skiing. Athletes typically hear a loud “pop” in the knee, which immediately gives out, followed by significant swelling.

An ACL tear may be a game-changer for players, keeping them out of the game for months and interfering with their training.