He proposes health of kitchen appliance! (7)
I believe the answer is:
toaster
'kitchen appliance' is the definition.
(toaster is a type of kitchen appliance)
'he proposes health' is the wordplay.
I cannot quite see how this works, but
'health' could be 'toast' (I've seen this before) and 'toast' is present in the answer.
The remaining letters 'er' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
'of' acts as a link.
Can you help me to learn more?
(Other definitions for toaster that I've seen before include "At store (anag.)" , "something in kitchen" , "Bread griller" , "one that suggests health" , "wedding present?" .)