Draw breath if home and healthy (6)
I believe the answer is:
inhale
'draw breath' is the definition.
(I've seen this before)
'home and healthy' is the wordplay.
'home' becomes 'in' ('he's home' can mean 'he's in').
'and' is a charade indicator (letters next to each other).
'healthy' becomes 'hale' ('hale' can be similar in meaning to 'healthy'**).
'in'+'hale'='INHALE'
'if' acts as a link.
(Other definitions for inhale that I've seen before include "Whiff" , "Breathe in (gas, smoke)" , "drag" , "Draw in air or smoke" , "Draw breath" .)