Wash away sweat and odor-causing bacteria by taking regular baths or showers. Be sure to use anti-bacterial soap as these are designed and proven to remove odor-causing bacteria. Take time to thoroughly wash areas of the body that are more prone to sweating such as underarms and feet.
Showering a few times a week, especially after you exercise or do other activities that make you sweat, may be enough to rid you of body odor without drying out or irritating your skin. After your shower or bath, apply an antiperspirant and deodorant.
Body odor is caused by a mix of bacteria and sweat on your skin. Your body odor can change due to hormones, the food you eat, infection, medications or underlying conditions like diabetes. Prescription-strength antiperspirants or medications may help.
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.
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.
Sniff your clothes at the end of the day.
Sweat tends to soak into clothing, especially your underwear, your bra, or your T-shirt. Toward the end of the day, give your clothing a sniff. If it smells pungent or musty, it's likely that you've got some body odor.
Many doctors say a daily shower is fine for most people. (More than that could start to cause skin problems.) But for many people, two to three times a week is enough and may be even better to maintain good health. It depends in part on your lifestyle.
According to Shirley Chi, MD, a board-certified dermatologist in Los Angeles, there isn't a one-size-fits-all approach. Showering "once every three days is fine." If you have a skin condition, the answer is different, however.
"Showering less helps strengthen your immune system by keeping disease-fighting bacteria living on your skin. It also allows us to preserve more of our microorganisms and the skin's natural oils," she says.
This heightened sense of smell is called hyperosmia. It can happen consistently or during certain periods of time. If it comes and goes, it may be a sign of an underlying medical condition.
"You should absolutely shower, otherwise you'll stink," she says. "But if you don't, it doesn't mean that you're microbiologically dirty. Sweat is mostly sterile." Indeed, we've reported that sweat isn't what makes you smell after you work out; it's the bacteria on your skin.
The answer has to do with hormones—specifically, pheromones. “Pheromones are chemicals that animals and humans produce, which change and influence the behavior of another animal or human of the same species,” says Erica Spiegelman, wellness specialist, recovery counselor, and author of The Rewired Life.
It would be amazing if you could sniff yourself and immediately pick up on any emanating odors, but alas, life isn't so simple. According to Lifehacker, it can be quite difficult to detect your own body odors because the receptors in your nose shut down after smelling the same scent for too long.
In fact, according to research published in Nature, your nose can detect about one trillion smells! But your own underarms could reek and you might not be able to tell: Humans are prone to what scientists call olfactory fatigue; our sense of smell just gets plain tired out by familiar odors and stops detecting them.