Nails on chalkboard & wet socks are a given! What else irks you?
Feeling- Every time DH uses the olive oil or vegetable oil he manages to get it all over the lid. When I go to use it, it drives me NUTS getting oil on my hands! Hate that feeling. I also can't stand citrus juice on my hands... if I eat an orange or slice a lemon I can't just wipe my hands with a paper towel- I need soap!
Sound- I hate the sound of my cat cleaning herself, like go suck on your butt elsewhere!
Smell- I can't stand cigarette smell, or dogs/ houses with dogs that don't clean up well (not all owners but some you walk in and take a breath and it's nasty)