Perhaps run off and smother short love god in kisses (5)
I believe the answer is:
xerox
'perhaps run off and smother' is the definition.
I can't judge whether this definition defines the answer.
'short love god in kisses' is the wordplay.
'short' means to remove the last letter.
'love god' becomes 'eros' (Greek god of love).
'in' means one lot of letters goes inside another.
'kisses' becomes 'xx' (two X's - X can represent a kiss).
'eros' with its last letter taken away is 'ero'.
'ero' placed into 'xx' is 'XEROX'.
Can you help me to learn more?
(Other definitions for xerox that I've seen before include "Copy machine" , "Photocopy" , "Trade mark photocopier" , "Copying machine" .)