Foods that tend to make you sweat more, such as hot peppers or other spicy foods, might also lead to body odor. And the aroma of foods like onions or garlic can be carried in your sweat. Drinks with caffeine or alcohol may also make you sweat more.
If you're worried you're one of these people, one trick is to lick your wrist, wait ten seconds, then sniff the patch you licked: If it smells, chances are, so does your breath. An even more reliable method, of course, is simply to ask someone.
The two B-vitamins that might have some connection to body odor are vitamin B-1 (thiamin) and the B vitamin choline, Jasonides tells Lucy.
Hair is another place where bacteria like to hide. If you still smell a strong body odor after a shower, consider shaving the hair in your armpits, groin, and chest. The hair's surface is a perfect place for bacteria to call home, and it's harder to eliminate them from the hair than your bare skin.
A person living with a health condition such as diabetes or kidney disease may also have sweat that smells like ammonia. A person can try antiperspirants to reduce the amount they sweat, and deodorants to cover up any odors. A doctor can treat any underlying health conditions to help reduce the ammonia smell in sweat.
Foods such as garlic, onions, cumin, and curry can also cause changes in body odor. The sulfur-like compounds that the body releases as it breaks down these foods can react with the sweat on the skin, producing body odor that may be different than a person's natural scent.
An olfactory hallucination (phantosmia) makes you detect smells that aren't really there in your environment. The odors you notice in phantosmia are different from person to person and may be foul or pleasant. You may notice the smells in one or both nostrils.
When the bacteria break down the sweat they form products called thioalcohols, which have scents comparable to sulfur, onions or meat. "They're very very pungent," says Bawdon.
Groin sweat contains fatty acids and proteins which feed bacteria. As the bacteria break down the nutrients in groin sweat, foul-smelling acids are left behind.
Showering destroys these happy bacterial colonies; they're completely wiped out by all of our frequent rubbing and scrubbing. And when the bacteria washed off by soap repopulate, they tend to favour microbes which produce an odor – yes, too-frequent showering may actually make you smell more.
Iron deficiency anemia may cause a desire to smell.
Estrogen and progesterone levels fall relative to your testosterone, while cortisol tends to increase. Higher levels of both testosterone and cortisol have been linked to stronger body odor.
When you're deficient in magnesium, your body's ability to break down sweat into different compounds can get thrown off. That means that instead of just breaking down into water and carbon dioxide, some of the compounds in sweat can form sulfur compounds that smell like rotten eggs or garlic.
Urinary Tract Infections UTIs and dehydration can sometimes cause urine to smell, which can in turn create an odor (sometimes likened to the smell of bleach or ammonia) in the vaginal area.
Olfactory reference syndrome (ORS), also known as olfactory reference disorder, is an underrecognized and often severe condition that has similarities to obsessive-compulsive disorder (OCD) and body dysmorphic disorder (BDD). People with ORS think they smell bad, but in reality they don't.
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.