I actually developed a sort of eating disorder (read no further if you are squeamish, it is kinda gross) about 2 years ago.
When I eat a hamburger/cheeseburger or other sandwich type item, about halfway through I become aware of my masticating and basically throw up. I actually gave them up a while ago for that reason. I seem to be OK with tacos and even pasta, but the bread in sandwiches makes me sick (but again, bot right away).
When I see burgers on TV, I crave them so it isn't that.
I don't understand, but every now and then I try again -- I have learned to know when I am about to get sick and can stop and just eat the rest without the bun.
Weird, huh? I thought a part of your brain is supposed to shut off when you eat, else you would never be able to chew anything.
So a new paranoia about barefoot isn't surprising.