Hygiene issue not even in town (7)
I believe the answer is:
borough
'town' is the definition.
(borough is a kind of town)
'hygiene issue not even' is the wordplay.
'hygiene issue' becomes 'bo' (informal abbreviation for body odour).
'not even' becomes 'rough'.
'bo'+'rough'='BOROUGH'
'in' acts as a link.
(Other definitions for borough that I've seen before include "6D 5A [TUBE STATION]" , "Administrative division of London" , "Town with a corporation and special privileges" , "Local government division" , "Administrative area" .)