Drop keys and perfume (7)
I believe the answer is:
descent
'drop' is the definition.
(I've seen this in another clue)
'keys and perfume' is the wordplay.
'keys' becomes 'de' (I've seen this in other clues).
'and' means one lot of letters go next to another.
'perfume' becomes 'scent' (synonyms).
'de'+'scent'='DESCENT'
(Other definitions for descent that I've seen before include "Roots" , "Bloodline" , "Comedown (of ancestry?)" , "A climb down" , "Drop" .)