The release of feelings on bacteria results (10)
I believe the answer is:
abreaction
'the release' is the definition.
(I have seen 'Emotional release' mean 'abreaction' so perhaps 'release' could also mean 'abreaction')
'on bacteria results' is the wordplay.
'results' is an anagram indicator (I've seen 'result of' mean this).
'on'+'bacteria'='onbacteria'
'onbacteria' anagrammed gives 'ABREACTION'.
'of feelings' is the link.
This may not be right. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for abreaction that I've seen before include "Emotional release" , "emotional response" , "resolution of a neurosis" , "What a therapist resolves" .)