I think that usually, peanut/other allergies are only dangerous if the person is eating peanuts, which that person can avoid (or other food provided for him/her

I think that usually, peanut/other allergies are only dangerous if the person is eating peanuts, which that person can avoid (or other food provided for him/her if the office provides food). If you're talking about a dog though, it is usually impossible for the person to avoid the dog.