Characters with fur!
If your food sensitivity includes skin contact, be especially careful when Character Dining. The Disney characters love to hug, as they walk around and meet the diners, but they may be carrying allergens from other kids who may not wipe their mouths or hands before their time with character. Therefore, be aware of this, and wipe your hands and face after a furry hug.
If you are allergic to peanuts, be careful around the animal handlers at the Animal Kingdom. They sometimes use peanuts as treats for the animals. So, they often have peanut residue on their hands and clothes.