Phlegm and other people's snot. I hate the sound of people sniffling. Ugh.
Maggots.
Grubs. Y'know, the fat white ones. EW. God.
Centipedes and millipedes, but that's more a full-on phobia. I tend to freak out.
At the camp I used to work at, when we cleared the tables, ANYTHING liquid would go in the drink pitchers for clean-up purposes. So, as weird as it sounds, that mix of OJ, cereal milk, and whatever else...ew, ew, ew, ew. I can handle mixed food, but not mixed liquids.