Burn smog, OK with energy (2,2,2,5)
I believe the answer is:
go up in smoke
'burn smog' is the definition.
I don't know anything about this answer so I cannot tell whether this works.
'ok with energy' is the wordplay.
I cannot quite see how this works, but
'ok' is found in the answer.
'energy' could be 'go' (go can mean energy or enthusiasm) and 'go' is located in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for go up in smoke that I've seen before include "Arsonist's deed may" , "Come to nothing (like a cigarette?)" , "Cigars will" , "vanish" , "be wasted" .)