Know how a whiff of certain odors can take you back in time, either to a great memory or bad one?

It turns out emotion plays an even bigger role with the nose, and that your sense of smell actually can sharpen when something bad happens.

Northwestern University researchers proved the surprising connection by giving volunteers electric shocks while they sniffed novel odors.

— From Emotion Makes Nose a Sharper Smeller at Netscape News, with thanks to Linda for the link!