[ASHRAE Standard 62.1]:a quality of gases, liquids, or particles that stimulates the olfactory organ.

[EN 12792:2003, 274]:quality of gases, liquids or particles that stimulates the olfactory organ.

[ISO 16814:2008, 3.29]:quality of a substance that stimulates the sense of smell.NOTE Adapted from ISO 4225:1994 [46]