Thick smoke? (5)
I believe the answer is:
cigar
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">thick smoke?</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for cigar that I've seen before include "A real smoke!" , "Big roll of tobacco" , "Corona, eg" , "Item kept in a humidor" , "A roll of leaf tobacco" .)