Roam around after a smell (5)
I believe the answer is:
'a smell' is the definition.
('aroma' can be a synonym of 'smell')
'roam around after' is the wordplay.
'around' indicates anagramming the letters.
'after' becomes 'a' (this might be a standard abbreviation I've not previously seen).
'roam' anagrammed gives 'arom'.
Can you help me to learn more?
(Other definitions for aroma that I've seen before include "Food fragrance" , "Pervasive quality" , "Savour" , "Spicy fragrance" , "A pleasant smell as of food" .)