Dogs can be trained to identify the scent of lung cancer long before symptoms develop.
190
Children's sense of smell is better than adults'.
860
2% of Europeans lack the genes for smelly armpits.
6
"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