The chlorine smell in swimming pools is accentuated by the chemical's reaction with impurities (like poop.)
7
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
If a vampire bat goes 2 days without drinking blood, they can die. However, well fed female bats will puke up blood and share it with other bats that they like in exchange for grooming.
13
"Fish odor syndrome" is a rare genetic disorder that causes people to smell like rotten fish.
5
Sniffologists have the job of sniffing armpits.
4
Australian Graham Barker has been collecting his own belly button fluff every day since 1984 - keeping it in storage jars.
15