Smoked but has kicked the habit (5)
I believe the answer is:
cured
'smoked' is the definition.
(I've seen this before)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for cured that I've seen before include "Rehabilitated" , "Healed or salted" , "Remedied" , "Freed of disease" , "Made well" .)