Male armpits have more apocrine sweat glands and contain more microbes from the genus Corynebacterium, which manufacture some of the strongest odors. The presence of grapefruit and onion—the scent of a woman—in male sweat gives the lie to the notion that mens B.O. is from Mars while womens is from Venus.

Secondly, why does my body odor smell like onion? When you have apocrine bromhidrosis, body odor is the byproduct of lipid-rich apocrine gland sweat mixing with skin bacteria. When these two ingredients come together, they produce thioalcohols — compounds that smell like sulfur, onions or raw meat .

In this manner, why do I smell grapefruit?

Or it smells like a bowl of fruit. In fact, if your breath smells like you just noshed on the entire grapefruit section of the grocery store, then head to your doctor immediately — it could mean you have diabetes, says Boghosian.

What does grapefruit smell like?

Odor profile: tart, tangy, with bitter aftertaste, clearing elegant aroma, happy smell, uplifting.