Stinking row (4)
I believe the answer is:
rank
I believe this clue is a double definition.
'stinking' is the first definition.
(rank can mean smelling very bad)
'row' is the second definition.
(I've seen this before)
(Other definitions for rank that I've seen before include "Level; smelling bad" , "Position; foul-smelling" , "Foul - station" , "Position of seniority" , "High social standing" .)