Source:http://linkedlifedata.com/resource/umls/id/C0028884
MSH: The volatile portions of substances perceptible by the sense of smell. (Grant & Hackh's Chemical Dictionary, 5th ed),CSP: volatile portions of substances capable of stimulating sense of smell.,NCI: The sensation that results when olfactory receptors in the nose are stimulated by particular chemicals in gaseous form.,NCI: A smell.