The unique receptors in our noses could indicate diseases such as Alzheimer's and could possibly help in matching organ and bone marrow donors.

Researchers at the Weizmann Institute found that by training our noses to associate bad smells with cigarette smoke during sleep, they could influence people to cut down on smoking.

Not only dogs sniff each other; a new study reveals that humans do, too! After shaking someone's hand, people significantly increased the sniffing of their own hands!