Teenager makes a fuss over the French perfume (10)
I believe the answer is:
adolescent
'teenager' is the definition.
(synonyms)
'a fuss over the french perfume' is the wordplay.
'a fuss over' becomes 'ado' (I am not sure about this - if you are sure you should believe this answer much more).
'the french' becomes 'le' ('the' in French).
'perfume' becomes 'scent' (synonyms).
'ado'+'le'+'scent'='ADOLESCENT'
'makes' is the link.
Can you help me to learn more?
(Other definitions for adolescent that I've seen before include "Teenager" , "Youth" , "sixth-former, say" , "Teenage" , "Developing" .)