Go up in smoke (4)
I believe the answer is:
burn
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">go up in smoke</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for burn that I've seen before include "Brand" , "Set on fire" , "Severely overcook" , "Scottish stream" , "Set 1 across [ALIGHT]" .)