Odorant

adj. stimulating the sense of smell; odorous

An aroma compound, also known as odorant, aroma, fragrance, flavor, is a chemical compound that has a smell or odor. A chemical compound has a smell or odor when two conditions are met: the compound needs to be volatile, so it can be transported to the olfactory system in the upper part of the nose, and it needs to be in a sufficiently high concentration to be able to interact with one or more of the olfactory receptors.
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adj. odorous, fragrant, redolent

v. scent, smell; follow a trail of odor; perfume, fill with an odor; sense, perceive

(a.)
Yielding odors; fragrant.
  

odoriferous
odorous
odorant