2% of Europeans lack the genes for smelly armpits.
6
Children's sense of smell is better than adults'.
860
Dogs can be trained to identify the scent of lung cancer long before symptoms develop.
190
‘Old people smell’ is actually caused by a chemical, 2-nonenal, that old people secrete through their skin
8
"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