don't do it if/when you don't like it
 

I would like to find out whether it is possible to say "Don't watch the film when you don't like it" or "Don't eat my food when you don't like it"?I mean the usage of "if" seems more natural here - "Don't watch the film if you don't like it", "Don't eat my food if you don't like it". But my question is - may I say it with "when" and if yes, does this "when" change anything concerning the emotional side of the phrase?