Person simply fuming? (6)

I believe the answer is:

smoker

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'person' is the definition.
(smoker is a kind of person)

I can't explain the rest of the clue.

(Other definitions for smoker that I've seen before include "part of train once" , "one cures" , "Regular cigarette user" , "Addict perhaps" , "Pipe or cigarette user" .)

I've seen this clue in the Evening Standard.

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