1. The liquid on top of the sour cream. I am never the one that opens it and stirs it. It gives me the dry heaves.
2. Skin diseases [i.e. ringworm (Tinea corpus)] things that are generally oozy and crusty. Whenever a wrestler asks me "Do you think this is ringworm?" I make them stand across the room from me.
That's all I can think of at the moment. Only two things gross me out. Not a bad list at all.