Sweet smell – and something annoying (6)
I believe the answer is:
humbug
'sweet' is the definition.
(boiled sweet)
'smell aeur and something annoying' is the wordplay.
I cannot quite see how this works, but
'smell' could be 'hum' (something with a bad smell is 'humming') and 'hum' is present in the answer.
The remaining letters 'bug' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for humbug that I've seen before include "Hypocrite or peppermint sweet" , "Trick; rubbish" , "Nonsense - striped sweet" , "It's stuff and nonsense about the sweet" , "Con" .)