The cold warm thing has a name... Do I remember it? no... I sort of just shrugged it off. It doesn't last long for me and it's not terribly annoying or anything. Doctor said it wasn't a big deal. I'm not out in the cold too often either, I've mostly noticed it when hiking on chilly days.
Allergies are a pain, I try to mostly ignore them, but some you just can't. I couldn't imagine living with an allergy so severe you couldn't be in the same room as something like peanut butter, I know it happens though. Peanut is the worst.