The chlorine smell in swimming pools is accentuated by the chemical's reaction with impurities (like poop.)
7
"Fish odor syndrome" is a rare genetic disorder that causes people to smell like rotten fish.
5
There's a phone app called RoboRoach that allows you to remotely control a cockroach through a chip that you to manually implant into the unwitting critter.
10
Sniffologists have the job of sniffing armpits.
4
Most of the dust underneath your bed is actually your own dead skin.
251
Within three days of death, the enzymes that once digested your food begin to eat you.
22