Sniffologists have the job of sniffing armpits.
4
Most of the dust underneath your bed is actually your own dead skin.
251
"Fish odor syndrome" is a rare genetic disorder that causes people to smell like rotten fish.
5
The chlorine smell in swimming pools is accentuated by the chemical's reaction with impurities (like poop.)
7
Condoms were originally made of animal intestines or linen.
347