Doing fine sort of skunk (4)
I believe the answer is:
atok
'sort of skunk' is the definition.
'atok' can be an answer for 'skunk' (I've seen this before). I am unsure of the 'sort of' bit.
'doing fine' is the wordplay.
'doing' becomes 'at' (I can't explain this - if you can you should give a lot more credence to this answer).
'fine' becomes 'ok' ('OK' can be a synonym of 'fine').
'at'+'ok'='ATOK'
Can you help me to learn more?
(Other definitions for atok that I've seen before include "Skunk" , "might raise a stink" , "Fur-coated creature" , "what gives off whiff" .)