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The Daily Insight

Why does my feces smell like chemicals

Author

Sarah Rodriguez

Published Feb 15, 2026

In many cases, foul-smelling stools occur due to the foods people eat and the bacteria present in their colon. However, foul-smelling stools can also indicate a serious health problem. Diarrhea, bloating, or flatulence may occur with foul-smelling stools. These stools are often soft or runny.

What causes poop to smell like chemicals?

That is made up of microbes (bacteria) that live in your gut. Most of the time, smelly poop is caused by your diet. It could be caused by eating certain foods or from lactose intolerance. But if it routinely smells bad, you may have an imbalance in your microbiome or a disease like inflammatory bowel disease.

Why does my child poop smell like ammonia?

Stool and urine left in diaper too long can combine to make ammonia. It can cause a mild chemical burn. The fumes when you change the diaper will smell like ammonia. This is more common with cloth diapers.

Why does my BM smell like ammonia?

Dehydration occurs when someone fails to drink enough fluids or has a significant fluid loss, due to vomiting or diarrhea. Ammonia odor happens when chemicals in urine are concentrated due to a lack of water. In addition to an ammonia-like odor, another telltale sign of dehydration is bubbles in a person’s urine.

What does rotavirus poop smell like?

Rotavirus diarrhea is usually very characteristic: green, profuse, and smelling slightly of sulfur (or “rotten eggs”).

Why does my poop smell like Sulphur?

When you eat foods that are high in sulfur—such as meats, dairy, garlic, and cruciferous veggies (think: broccoli, cabbage, kale)—your gut works overtime to digest them and produces a larger amount of the gasses that make your poop smell.

What does celiac poop smell like?

Common symptoms It’s caused by the body not being able to fully absorb nutrients (malabsorption, see below). Malabsorption can also lead to stools (poo) containing abnormally high levels of fat (steatorrhoea). This can make them foul smelling, greasy and frothy. They may also be difficult to flush down the toilet.

Does poop contain ammonia?

As normal faeces contain negligible amounts of urea this ammonia must have been generated from sources other than urea. 3. Ammonia was also generated by faeces delivered by sodium chloride enema, and by ileostomy fluid, indicating that the phenomenon is not confined to distal colonic contents.

What does it mean if your poop smells like mothballs?

A curious phenomenon reported by parents of some children with autism is a mothball-like odor to the stools of their children. A study by Moore et al. [35] suggested that this odor is not uncommon in healthy adult subjects and is due to the presence in such stools of indole, skatole (3-methyl-indole), or both.

What happens if you smell ammonia?

Exposure to high concentrations of ammonia in air causes immediate burning of the eyes, nose, throat and respiratory tract and can result in blindness, lung damage or death. Inhalation of lower concentrations can cause coughing, and nose and throat irritation.

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What does Campylobacter smell like?

This compound, which smells of pears, was missing in samples from patients with other diseases. Campylobacter jejuni, which can cause food poisoning and Clostridium difficile, which can inflame the colon, also have distinctive chemical fingerprints.

What is Lota virus?

Rotavirus is a virus that causes diarrhea and other intestinal symptoms. It’s very contagious and is the most common cause of diarrhea in infants and young children worldwide. If you look at a rotavirus through a microscope, it has a round shape.

Does gastroenteritis have a smell?

Experienced nurses classified most of the stools by smell alone; it seems likely, therefore, that stools infected by rotavirus have a distinctive smell. As stools infected with enteropathogenic E coli also have a characteristic smell, it may be that other organisms causing diarrhoea may also be identified by smell.

What does poop look like with gluten allergy?

Diarrhea, constipation, and smelly feces Plus, individuals with celiac disease may experience pale and foul-smelling feces, due to poor nutrient absorption ( 5 ).

What is IBS poop like?

Frequent, loose stools are common in IBS, and are a symptom of the diarrhea-predominant type. Stools may also contain mucus.

Why does my poop smell so bad NHS?

When your poo smells really bad, this can be a sign of poor digestion – the food is sitting inside you for too long. Make sure you get plenty of exercise. A healthy diet with lots of fruit, vegetables and fibre can work wonders in making your poo less pongy. Keep off that junk food!

Why does my poop smell like sauerkraut?

If your body lacks lactase enzyme or produces less bacteria, this can lead to undigested lactose to ferment and produce foul-smelling gas and stools. Consult your doctor if you think you are lactose intolerant.

What does hemorrhoids smell like?

External haemorrhoids that have developed clots of blood are typically the ones that might pop. This could result in a metallic, iron smell from a mixture of blood and mucus that may have collected in the haemorrhoid.

What does giardia poop smell like?

Giardia infection (giardiasis) can cause a variety of intestinal symptoms, which include: Diarrhea. Gas. Foul-smelling, greasy poop that can float.

What do unhealthy bowel movements look like?

Types of abnormal poop pooping too often (more than three times daily) not pooping often enough (less than three times a week) excessive straining when pooping. poop that is colored red, black, green, yellow, or white.

Why does my poop smell like tuna fish?

Trimethylaminuria (TMAU) is an uncommon condition that causes an unpleasant, fishy smell. It’s also called “fish odour syndrome”. Sometimes it’s caused by faulty genes that a person inherits from their parents, but this isn’t always the case. There’s currently no cure, but there are things that can help.

Why is my poop messy when I wipe?

Sticky poop can be a symptom of a temporary or chronic digestive disorder, or the result of a diet that contains too much fat. Sticky poop can appear greasy and pale or dark and tarry. If you also have other symptoms, such as gas or abdominal cramps, talk to your doctor to determine the cause.

Does gas smell like ammonia?

What is ammonia? At room temperature, ammonia is a colorless gas with a very pungent odor. This odor is familiar to many people because ammonia is used commonly in cleaning products and smelling salts. Ammonia gas can be dissolved in water.

What does ammonia smell like in pee?

Pee that smells like ammonia If you detect a hint of ammonia in your urine, it could be a sign of a urinary tract infection. The odor suggests that bacteria may be swimming around in your urinary system, most likely in your urethra, kidneys or bladder.

Is ammonia cancerous?

There is no evidence that ammonia causes cancer. The The Department of Health and Human Services (DHHS), the EPA, and the InternationalAgency for Research on Cancer (IARC), have not classified ammonia for carcinogenicity.

What are the symptoms of E coli?

Symptoms of Shiga toxin-producing E. coli (STEC) infection vary for each person, but often include severe stomach cramps, diarrhea (often bloody), and vomiting. Some people may have a fever, which usually is not very high (less than 101˚F/38.5˚C). Most people get better within 5 to 7 days.

What causes campylobacteriosis?

Campylobacteriosis is an infection caused by bacteria of the genus Campylobacter. These bacteria live in the intestines of healthy birds, and raw poultry meat commonly has Campylobacter on it.

What is Staphylococcus associated with?

S. aureus has long been recognized as one of the most important bacteria that cause disease in humans. It is the leading cause of skin and soft tissue infections such as abscesses (boils), furuncles, and cellulitis. Although most staph infections are not serious, S.

What are the first symptoms of rotavirus?

The most common symptoms of rotavirus are severe watery diarrhea, vomiting, fever, and/or abdominal pain. Symptoms usually start about two days after a person is exposed to rotavirus. Vomiting and watery diarrhea can last three to eight days.

What are symptoms of Norovirus?

What are the symptoms? Common symptoms of norovirus infection include vomiting, diarrhea, and stomach cramping. Less common symptoms can include low-grade fever or chills, headache, and muscle aches. Symptoms usually begin 1 or 2 days after ingesting the virus, but may appear as early as 12 hours after exposure.

What disease does rotavirus cause?

Rotavirus is a very contagious virus that causes diarrhea. Before the development of a vaccine, most children had been infected with the virus at least once by age 5. Although rotavirus infections are unpleasant, you can usually treat this infection at home with extra fluids to prevent dehydration.