For dessert have something nice-smelling with alcohol in it (10)

I believe the answer is:

aftershave

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'something nice-smelling with alcohol in it' is the definition.
I know nothing about this answer so I can't tell whether this works.

'for dessert have' is the wordplay.
'for dessert' becomes 'afters' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'afters'+'have'='AFTERSHAVE'

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(Other definitions for aftershave that I've seen before include "liquid splashed in bathroom" , "soothing application" , "I'm slapped on the face" , "cheeky alcoholic preparation" , "styptic lotion" .)

I've seen this clue in the Evening Standard.

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