What Your Smell Says About You – The Wall Street Journal

What does your body’s smell reveal about you? A lot, as it happens: your age, your diet, your emotions, how robust your immune system is, if you’re getting sick—and if so, with which disease (including Covid-19). It can even reveal whom you might marry.

Your body is constantly radiating information—and this information leaks into the air as smells. Exactly how we detect and interpret smells remains a mystery, however.