Opposed to one copying smoker (5)

I believe the answer is:

vaper

'smoker' is the definition.
(someone who vapes)

'opposed to one copying' is the wordplay.
'opposed to' becomes 'v' (abbreviation for versus).
'one copying' becomes 'aper' (ape can mean to copy or imitate).
'v'+'aper'='VAPER'

I've seen this clue in The Times.

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