English students enter text on perfumes (6)
I believe the answer is:
smells
'perfumes' is the definition.
'english students enter text' is the wordplay.
'english' becomes 'e' (abbreviation).
'students' becomes 'll'.
'enter' indicates putting letters inside.
'text' becomes 'sms' (abbreviation for Short Message Service).
'e'+'ll'='ell'
'ell' inserted within 'sms' is 'SMELLS'.
'on' acts as a link.
(Other definitions for smells that I've seen before include "Aromas, scents" , "Odours, aromas" .)