ear wax

Sneezing to prevent pregnancy, tasting earwax to catch disease ... is the old conception of the ancient Greeks.

Researchers from the Monell Center (USA) found that the smell of earwax can reveal identity information, even our sexual orientation and health.

A British study found that a rare gene causes some people to not produce

In the future, people can detect many diseases at home early with simple kits that check blood, sweat or even earwax, feces.