Awful-smelling
I believe the answer is:
fetid
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">awful</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ >'<span class="explanation-format__original">smelling</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ ></span>
(Other definitions for fetid that I've seen before include "Having a stale and unpleasant smell" , "Stinking, like animal breath" , "Stinking, rank" , "Malodorous, stinking" , "Noxious" .)