Nacona, on the lighter side of this topic: what the heck are so many people doing with something in their mouths when they are in a support center? Is this "between calls"?
When I took a look at a couple of other posts here, I recalled that I used to feel irritated some mornings at work some years back when I heard the spoon hitting the dish (her morning cereal and I didn't particularly like the woman). This was while I was in drinking mode though. I adapted later on.
I have also noticed that I have often been picky about the people I will sit down and eat with. I don't know how much that's tied to mental issues though.