Odorants mustdissolve in the mucus layerthenbind receptorson the olfactory cilia. Only ~400 receptor types, but thanks to thecombinatorial codewe can distinguish up to ~1 trillion odors. The olfactory pathway goesstraight to the limbic system→ smell evokes memory & emotion.
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Pick a "Scenario" (strong odor / congestion / adaptation / anosmia / sneeze) · drag "Odor concentration" · click each part or concept for details
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Odor concentration & nerve signal over timeodor concentrationsignal to brain