[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

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