Judy's partner - smelly like a good sock! (5,2,3,4)

'judy's partner smelly like a good' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.

'sock' is the wordplay.
I cannot really see how this works, but
'sock' could be 'punch' (I've seen this before) and 'punch' is found within the answer.
The remaining letters 'onthenose' is a valid word which might be clued in a way I don't understand.
This may be the basis of clue (or it may be nonsense).

Can you help me to learn more?