Whitaker Center for Science and the Arts had a special Grossology exhibit a while back. They still have a great related site up, with Foul Facts, Eeww Experiments, and Disgusting Downloads. I love the instructions for Edible Poop Cookies: “Shape the dough into turds. You can make flattened cow pies or little kitty turds.” Ew, gross!!
Amazon has several grossology books, including “Hands-On Grossology“.