17 across
Hitch
where
consumption
disturbed
by
whiff
(5)
Hitch where consumption disturbed by whiff (5)
hints
0
checks
0
hints
The definition is at the beginning of the clue.
How the clue works
The definition is Hitch, as in to thumb a ride. You take TB (tuberculosis, old word for consumption) and drop HUM (a whiff, a smell) inside it to get T-HUM-B.