For an individual to detect an odor then molecules must first dissolve in the
mucus before they bind to the receptor sites of the olfactory hairs.
The nose is the organ responsible for smelling and it possesses key
components such as the mucus found in the olfactory epithelium and
receptors found in the olfactory hairs for processing the type of smell to the
brain.
When individuals inhale substances, they are dissolved in the mucus to aid
their binding to the receptors and their subsequent relay of the signal to the
brain for processing.
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