To be fair, most people massively underuse their sense of smell. Feynman described being able to distinguish who touched long untouched books by smell - sounds

To be fair, most people massively underuse their sense of smell. Feynman described being able to distinguish who touched long untouched books by smell - sounds a bit farfetched until you try, it's not that hard for most. Then again, it's also not very useful in today's society.