Distinctive atmosphere (4)
I believe the answer is:
aura
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">distinctive atmosphere</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for aura that I've seen before include "Intangible essence emanating from a person" , "Distinctive quality around a person or place" , "'Air, atmosphere (4)'" , "Intangible something around a person" , "Nimbus" .)