Closed Captioning
apply | reset x
font
size
T
T
T
T
color

February 10th, 2013

Sniff test! How connected is your nose to your heart?

We’ve all seen those commercials featuring people blindfolded in cars with trash in the back, sniffing the air and leaving them mystified. Turns out there’s a science behind all that surprised sniffing. TODAY’s Erica Hill reports.

More video

TRENDING

LIFESTYLE