I am upset when graduate creates a stink (6)
I believe the answer is:
miasma
'a stink' is the definition.
(I've seen this before)
'i am upset when graduate' is the wordplay.
'i am' becomes 'I'm' (contraction).
'upset' is a reversal indicator.
'when' becomes 'as' (eg 'when I walked' means 'as I walked').
'graduate' becomes 'ma' (abbreviation for Master of Arts).
'im' in reverse letter order is 'mi'.
'mi'+'as'+'ma'='MIASMA'
'creates' is the link.
(Other definitions for miasma that I've seen before include "In poor atmospheric conditions" , "An unpleasant or unhealthy smell or vapour" , "Bad air" , "Unpleasant atmosphere" , "Unwholesome atmosphere or unhealthy vapours" .)