TIL: You Can Smell Through Your Skin

Ever have a funny taste in your mouth? It could be something other than bad breath caused by your lunch. Did you know you may actually be “tasting” through your skin? Some molecules are small enough to enter your body through your pores, disperse into your blood stream, and trigger the sensory receptors in your nose and mouth.

In this week’s Today I Learned, Kenny Broad, a National Geographic emerging explorer and environmental anthropologist, explains how he sometimes smells the characteristic rotten-egg stench of hydrogen sulfide gas when scuba diving in blue holes—even while wearing a mask and regulator.

PRODUCER/EDITOR: Laurence Alexander
SERIES PRODUCER: Christopher Mattle