At the top of your nasal passages behind your nose, there is a patch of special neurons about the size of a postage stamp. These neurons are unique in that they are out in the open where they can come into contact with the air. They have hair-like projections called cilia that increase their surface area. An odor molecule binds to these cilia to trigger the neuron and cause you to perceive a smell.
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Elvis impersonator,
Tue 10 May 2011, 8:38,
archived)
ah but HE'S A FLEADidn't think about that did you, clever clogs??
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Michael Ellis contributes nothing,
Tue 10 May 2011, 8:39,
archived)
