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Our Sense of Smell

Season 1 Episode 5 | 1m 02s

The experience of smell starts when air molecules meet tiny little hairs in our nasal cavity. These hairs are called cilia, and they trap the incoming fumes so they can be processed.

Extras
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See how the technology of the brain and nervous system shape our experience of the world.
Learn the story of human reproduction from attraction to a baby’s first breath.
Explore the incredible world of human sensation and how it defines our reality.
Uncover how the human body defends itself in an increasingly dangerous global environment.
Journey through the factory at the center of our bodies that turns food into energy.