Drinking from that bowl really puts you off. Besides, you strongly believe that it is not the right thing to do. Every time you see the cook you cannot avoid recalling this unpleasant and ugly incident. This feeling lasts throughout the trip and besides, the cook starts realising there is something the matter with you but (s)he doesn't know what it is. You feel your holidays have been spoilt because you did not do the right thing. Couldn't you do better?

Get back and think it over once more. Choose another option.