Personal vibe (4)
I believe the answer is:
aura
'personal vibe' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for aura that I've seen before include "Halo" , "Atmosphere or glow surrounding a person" , "Distinctive quality around a person or place" , "Atmosphere, quality" , "Invisible emanation" .)