Odor
Volatile chemical compounds perceived by the sense of smell / From Wikipedia, the free encyclopedia
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An odor (American English) or odour (Commonwealth English; see spelling differences) is caused by one or more volatilized chemical compounds that are generally found in low concentrations that humans and many animals can perceive via their sense of smell. An odor is also called a "smell" or a "scent", which can refer to either an unpleasant or a pleasant odor.
For other uses, see Odor (surname) and Odor (disambiguation).
"Aroma" redirects here. For other uses, see Aroma (disambiguation). "Scent" redirects here. For the film, see The Scent. "Stench" redirects here. For the gas, see Ethanethiol. "Odour" redirects here. Not to be confused with ODEUR.
While "odor" and "smell" can refer to pleasant and unpleasant odors, the terms "scent", "aroma", and "fragrance" are usually reserved for pleasant-smelling odors and are frequently used in the food and cosmetic industry to describe floral scents or to refer to perfumes.