odorant

This term is primarily used in technical, industrial, or chemical contexts. It describes a functional additive rather than a pleasant fragrance, distinguishing it from words like perfume or scent, which typically imply aesthetic appeal. In safety engineering, it refers specifically to the chemical markers added to colorless, odorless gases like methane to prevent explosions by making leaks perceptible to humans.

While the word describes a substance that produces an odor, it is rarely used in casual conversation. In a non-technical setting, one would typically use fragrance or aromatic compound. The term carries a neutral, clinical connotation, focusing on the utility of the smell rather than its quality.