Purge of SF incited outburst (9)
I believe the answer is:
disinfect
'purge' is the definition.
(I've seen this before)
'sf incited outburst' is the wordplay.
'outburst' indicates anagramming the letters (I've seen this in other clues).
'sf'+'incited'='sfincited'
'sfincited' anagrammed gives 'DISINFECT'.
'of' is the link.
(Other definitions for disinfect that I've seen before include "purge" , "Clean so as to destroy bacteria" , "get rid of bugs" , "Sanitise" , "Sterilise" .)