Dogs can be trained to identify the scent of lung cancer long before symptoms develop.
190
2% of Europeans lack the genes for smelly armpits.
6
The chlorine smell in swimming pools is accentuated by the chemical's reaction with impurities (like poop.)
7
Children's sense of smell is better than adults'.
860
The gas that gives rotten eggs their distinctive foul smell may slow ageing and block damaging chemical reactions inside cells, according to scientists in China.
5