1.   Aromatherapy, the study and semiscience of how scents can influence people, seeks to cash in on what the nose knows.

2.   Scientists believe they have figured out how the nose knows.

3.   The nose knows, and each scent recalls a specific memory -- a person, a place, a drive-in movie.

4.   The nose knows.

5.   Your nose knows when you draw close to this Great Plains city.