Scent ... Cologne, it's said (5)
I believe the answer is:
odour
'scent' is the definition.
(synonyms)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for odour that I've seen before include "Stink" , "Aroma or fragrance" , "Stench" , "Whiff" , "pervasive quality" .)