my understanding is that allergies to tree nuts (almonds, cashews, hazlenuts etc) are much, much different than being allergic to peanuts in that you rarely if ever get a full blown anaphylactic response with tree nuts.
So me, being allergic to tree nuts (but not peanuts - I eat peanut butter every morning), if I were to eat a bag of almonds I would feel nauseous and somewhat unwell but I wouldnt feel my throat closing off and be reaching for the epi pen. I've inadvertently eaten food with almonds in it and not suffered any consequences, something a peanut allergic person could never do with peanuts.
I understand that people that are allergic to peanuts have to be careful to not come in contact with peanuts or peanut residue. But almonds and cashews are different. A person with peanut allergies could then be in close proximity to someone eating a bad of almonds and not be in any danger.
Any allergists out there that can chime in and confirm?