Snoops into features (5)
I believe the answer is:
noses
I believe this clue is a double definition.
'snoops into' is the first definition.
'features' is the second definition.
(I have seen 'Facial features' mean 'noses' so perhaps 'features' could also mean 'noses')
(Other definitions for noses that I've seen before include "Snouts" , "Facial features" , "Beaks, conks" , "Organs of smell" , "Pries" .)