Bad smells overlooked by good people (6)
I believe the answer is:
greeks
'people' is the definition.
(Greeks are an example)
'bad smells overlooked by good' is the wordplay.
'bad smells' becomes 'reeks'.
'overlooked by' says to put letters next to each other (in a down clue, some letters go above others).
'good' becomes 'g' (abbreviation).
'reeks' put after 'g' is 'GREEKS'.
(Other definitions for greeks that I've seen before include "Natives of Athens" , "Olympian team" , "race" , "Virgil: 'I fear the ...... bearing gifts'" , "Eg, Athenians" .)