Pervasive atmospheres (5)
I believe the answer is:
auras
'pervasive atmospheres' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for auras that I've seen before include "coloured glows" , "Atmospheres that seem to surround people" , "Distinctive atmospheres around certain people" , "Distinctive characters" .)