Crossword Genius

In chemistry, density, ____ and colour are significant properties of a substance (5)

Ross

I believe the answer is:

odour

(Other definitions for odour that I've seen before include "Smell, redolence" , "Aroma or fragrance" , "Small, aroma" , "Bouquet" , "Olfactory sensation" .)

I've seen this clue in The Times and The Sunday Times.
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