As our skin matures, its natural antioxidant protection declines. This decline results in greater oxidation of lipid acid. When lipid acid is oxidized, the chemical compound nonenal is produced, giving off the “old people smell” that many of us are familiar with.
Many believe the distinct odor in nursing homes is urine, but it really it’s something called nonenal. As people age, this oxidation increases and causes more 2-nonenal to be present in and on our bodies.
Some people have a higher proportion of bacteria that digest our food (such as sugar and protein) and produce hydrogen sulfide and methyl mercaptan, which are the two compounds that correlate the strongest with what we perceive as foul breath.
Common causes include chlamydia infections as well as injuries to the urethra, such as from catheter trauma. The extra presence of bacteria can cause an unpleasant smell. Doctors will usually treat the condition with antibiotics, such as doxycycline.
Changes to body odor may be due to puberty, excessive sweating, or poor hygiene. Sudden changes are typically caused by the environment, medications, or foods that you eat. However, body odor, especially sudden and persistent changes to your normal odor, can sometimes be a sign of an underlying condition.
Sweat glands called “apocrine sweat glands” are found in the armpits, under the breast, and in the groin. As sweating occurs in these areas, bacteria that like warm, moist areas, break down the sweat to produce body odor. Excessive sweating or an overgrowth of bacteria in such areas can result in bromhidrosis.
Sinus and respiratory infections may also cause a person’s breath to smell like feces. Infections like bronchitis, colds, viruses, and strep throat generate bacteria that move from your nose to your throat, causing pungently offensive breath.
Parosmia Is a Post-COVID Side Effect That Distorts Your Sense of Smell —and More People Are Experiencing It. Imagine something pleasant smelling rotten or like poop. Loss of sense of smell is a well-established symptom of COVID-19, so much so that it can be used to diagnose the illness.
If your discharge continues to have an odor, you may have bacterial vaginosis (BV). BV is a vaginal infection but it’s not considered to be a sexually transmitted infection (STI). (Girls who are sexually active and who have BV often complain of more odor with sex).
Temporary vaginal odor is common and often goes away on its own. Vaginal odor is considered normal if you don’t have other symptoms. But if the odor is persistent and you’re experiencing burning, itching, discharge, or irritation, it’s a good idea to see your doctor for a vaginal exam.
It’s nasal attraction. Men can smell when a woman is turned on because of the aroma of her sweat — and they like it, according to a new study.
Women produce both Androsterone and copulin. The natural scent varies with the menstrual cycle. Some studies revealed that women’s scent smells most pleasantly during ovulation. Typically, a woman’s natural scent is called androstadienone.
The Major Histocompatibility Complex When someone has an MHC with a composition unlike yours, they have stronger immunity toward different diseases and medical conditions than you do, so they naturally smell better to you. Interestingly, the body odor of other people also affects attractiveness on another level.