Touch, taste, smell, sight, hearing… Our five senses play a vital role in daily life. Among them, smell is often underestimated, even though it can reveal a lot about our health. Some unusual bodily odors, persistent or suddenly stronger, should not be ignored.
Without falling into excessive worry, it helps to understand what certain odors can mean. Breath, sweat, urine or intimate odors — the body sometimes sends alert signals in its own way.
The Case of Bad Breath
Do you emit a foul rotten-egg odor when you pass gas or burp? It could be food poisoning, gastroenteritis, or gastroesophageal reflux disease (GERD). Note that certain sulfur-rich foods like cabbage, garlic, onions, or beer can also give breath that smells like rotten eggs.
While all breath has some odor, an especially unpleasant breath can reveal an underlying condition. It can stem from poor oral hygiene, dehydration, tonsillar casum — a buildup of dead cells on the tonsils — gum infection, a digestive disease, or dry mouth linked to stress or certain medications.
In rarer cases, a fruity or sweet breath can be associated with poorly controlled diabetes. And an extremely ammonia-like breath can sometimes point to a kidney problem. That is why only an appointment with a doctor or dentist will allow for pinpointing the exact source of the problem.
A simple habit to adopt: drinking enough water throughout the day helps reduce dry mouth and bacterial growth responsible for bad odors. Cleaning the tongue with a tongue scraper can also markedly improve breath.
Feces That Smell Especially Bad
By definition, stools smell bad. Evacuated through the rectum, feces can nonetheless, when they become especially nauseating or unusual, signal an intestinal disorder.
A very strong, persistent odor can appear in Crohn’s disease, ulcerative colitis, irritable bowel syndrome, gluten intolerance or celiac disease. Fatty stools, very odorous and difficult to pass can also indicate a problem with fat digestion.
Of course, diet plays a major role as well. A high intake of red meat, alcohol or ultra-processed foods can alter stool odor. Conversely, a higher-fiber diet typically helps improve bowel transit.
Regarding urine, it can also smell bad particularly after consuming certain foods like asparagus, garlic, or Brussels sprouts. An unusual odor can also be linked to a urinary tract infection, pyelonephritis, hormonal changes (period, pregnancy or menopause), a sexually transmitted infection (STI) or medication use.
A very dark and odorous urine can also simply reflect dehydration. Drinking enough water remains essential to limit discomfort and protect the kidneys.
Bad Odors in the Vagina and Armpits
In intimate areas, the vagina can also emit a strong fishy odor. This is characteristic of bacterial vaginosis, a disruption of the vaginal flora. This common condition can sometimes be fostered by overly harsh hygiene products or repeated vaginal douches that disrupt the natural balance of protective bacteria.
A bad odor in this area can also come from a forgotten tampon, a yeast infection, a sexually transmitted infection (STI) like chlamydia or gonorrhea, or a parasitic infection. In such cases, it is recommended to promptly consult a gynecologist.
Attention: scented products for intimate hygiene do not solve the root problem and can sometimes worsen irritation or further disrupt the vaginal flora.
Sweating is a normal and even essential reaction. Sweating helps maintain the body at the proper temperature, eliminates certain substances, and protects the skin thanks to the hydrolipidic film. However, particularly strong or suddenly different sweating can sometimes reveal a health issue.
The stress, certain medical treatments, a very spicy diet or excessive alcohol consumption can intensify body odors. But very heavy sweating can also be associated with liver or kidney diseases, diabetes, certain infections, or hormonal disorders.
Rather than masking these odors with deodorants or very strong perfumes, it’s better to stay alert to unusual changes and seek medical advice if the symptoms persist.
Can We Naturally Limit Some Body Odors?
Without replacing medical advice, a few simple habits can help limit certain daily odors. A more balanced diet, rich in fruits, vegetables and fiber, often helps improve the odor of sweat and breath. Reducing alcohol and tobacco can also have a quick effect.
On the home front, some people also use natural remedies like baking soda under the arms or foot baths with apple cider vinegar to counter persistent odors. These tips may provide temporary comfort, but they should never replace a consultation if odors become unusual or are accompanied by other symptoms.
