Cologne's common accompaniment, pronounced fragrance? (5)
I believe the answer is:
odour
'fragrance?' is the definition.
(fragrance is a kind of odour)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for odour that I've seen before include "Smell, redolence" , "for the nose to detect" , "Olfactory sensation" , "Smell; repute" , "pervasive quality" .)