Learn about 7 Receptors of Smell in this educational video from dizzo95.
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Male Speaker: 7 primary odors may exist from which all other smells are derived classification of these primary odors is difficult since it is extremely hard to achieve objective testing. One classification suggest that the 7 primary odors are camphoraceous like that of mothballs, Muskie like than of angelica roots, florl like that of a rose, pepper miniti like that of pepper mint, a cereal like that of nail polish, pungent like that of a lemon and putrid like that of sulfurous eggs. Before a chemical can be smelled it has to be volatile to diffuse into the air. It also has to be slightly water soluble to dissolve in the mucous that coats the olfactory epithelium and it must be fat soluble to enter the cilia of the receptor cells.