olfactory property vs odour

olfactory property and odour both are nouns.

Word	Noun	Adjective	Verb	Adverb
olfactory property	Yes	No	No	No
odour	Yes	No	No	No

As nouns, olfactory property and odour are synonyms defined as:

olfactory property and odour: any property detected by the olfactory system

Other synonyms of olfactory property include aroma, odor, scent, smell.

olfactory property (noun)	odour (noun)
any property detected by the olfactory system	any property detected by the olfactory system
	the sensation that results when olfactory receptors in the nose are stimulated by particular chemicals in gaseous form