What are some snacks that make you feel sick before you even eat them?

Roasted voles make me sick at the sight of them. Was living at my grandma's house at the time. My grandma is your kind of pancake crumbs fall on the ground will pick up, super thrifty kind of people, there is a big rat, in the grandma's house in the granary for a few days ah, we live next door, at night you can clearly hear the sound of it grinding teeth, my grandma set up a mousetrap, after a couple of nights of struggle, caught it, the normal situation to catch it to death, it should be thrown away. My grandma pulled out the skin and cut it into pieces and fried it, at first she didn't tell anyone including me. When I ate it, I felt the meat was very foul, remembering that my grandma had never bought meat before, and realizing that something was wrong, I threw up all of it. Later, my grandma put it into noodles, and when my grandpa came back from the field, he ate all of it without lifting his head. I'm not sure if I'm going to be able to get a good deal on this.