Smell bad second portion of game (4)

I believe the answer is:

pong

This clue is a double definition.

'smell bad' is the first definition.
(pong can mean to smell very bad)

'second portion of game' is the second definition.
(ping pong)

(Other definitions for pong that I've seen before include "It may make one wrinkle nose" , "Bad smell" , "In slang, a real stink" , "Smell unpleasantly" , "hum" .)

I've seen this clue in The Times.

Want a hint initially instead of a full solution? Install my app