Fog (4)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">fog</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I have seen 'Smoky fog' mean 'smog' so perhaps 'fog' could also mean 'smog')</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for smog that I've seen before include "Smoky haze" , "Fog polluted by smoke" , "Pea-souper" , "Pollutant haze" , "Thick polluted mist" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">fog</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for mist that I've seen before include "Watery film" , "Fine spray" , "Watery vapour" , "Cloud; thin fog" , "Mizzle; light rain" .)