H-kqge, I do some of the same things you do. I will wipe noticeable grease-prints, and try to open doors from a less used position on the handle. I have an awareness of what I've touched since last washing my hands. But for me, it is a symptom of my OCD.
I've only eaten out a few times over the last few years. Sometimes I'll just not eat or eat before arriving. But on the few occasions I did eat, I was fine. One time I ordered a bison burger without the bun. It came with onion rings that I intended to give to someone with me, but they forgot to put them on the side. They were on top of the meat and fried in gluten most likely. I meticulously took them off and eyed the meat carefully for any remaining crumbs. I enjoyed the meal and was fine. I've mistakenly let a few small crumbs get into my food before and that's all it takes for a burning inflammatory reaction to come within 5 minutes of eating it.
I've only eaten out a few times over the last few years. Sometimes I'll just not eat or eat before arriving. But on the few occasions I did eat, I was fine. One time I ordered a bison burger without the bun. It came with onion rings that I intended to give to someone with me, but they forgot to put them on the side. They were on top of the meat and fried in gluten most likely. I meticulously took them off and eyed the meat carefully for any remaining crumbs. I enjoyed the meal and was fine. I've mistakenly let a few small crumbs get into my food before and that's all it takes for a burning inflammatory reaction to come within 5 minutes of eating it.