Dickens character a smoker, evidently? (5)
I believe the answer is:
fagin
'dickens character' is the definition.
(character in Oliver Twist)
I can't explain the remainder of the clue.
(Other definitions for fagin that I've seen before include "Gang-leader" , "Oliver Twist villain" , "Dickensian villain" , "Criminal in Oliver Twist" , "Dickens' thief/receiver" .)