My DH likes to go work in his garage for hours and hours at a time. He is currently working on an engine and he's running it in the garage with the door closed. Then he came in later complaining that he had a headache and felt achy. I told him he needs to have the doors open out there and to run an exhaust fan, but he never listens to me. Yup, because I don't know anything and he knows everything. Dumbass.