I work in a job where we usually work alone, but this guy was supposed to be coming with me to the middle of no where today, and we would most likely be just the 2 of us. I've told my supervisor that I refuse to let that guy come with me, and I'd rather go on my own, even though that might make the job slightly more difficult. He sets off alarm bells with me, has made disgusting comments in the past, makes me really uncomfortable and just gives me the creeps. Just waiting to see what the backlash will be now that I've spoken up.