The American Academy of Allergy Asthma and Immunology disagrees, which I'm surprised by and totally thought they could too. Someone linked to this in another thread.

> What can occur is that the patient smells an allergen, and that smell triggers a strong memory of a past reaction or the fear of having a reaction and signs and symptoms of panic may occur – including an increase in heart rate, tight breathing, flushing of the skin and nervousness, all of which could be mistaken as signs and symptoms of anaphylaxis. ... While smells can linger in the air, the allergen proteins do not, which is why smelling a food will not trigger anaphylaxis.

Interestingly some allergens like those in shellfish /can/ aerosolize in a boiling pot, however according to them peanuts cannot. I can still absolutely see airlines reacting to passengers thinking they're having attacks and eliminating peanut snacks out of caution and to avoid the issues even an imagined attack can cause on a flight. That and the risk of surface contamination probably?

https://www.aaaai.org/tools-for-the-public/conditions-librar...

edit: dang scooped by 5 minutes.

Yes, the panic attack thing is pretty real. Know someone that had a severe allergic reaction, basically started choking to death, paramedics involved, all that. The experience imprinted itself deeply, such that she's deathly afraid of it happening again, and gets triggered with panic attacks. She's like two years on from the experience and through a lot of work she's much better, but it's pretty crazy how broadly it has impacted her life as an anxiety disorder. She knows it's not logical, but describes it as a fear of death and of a spiraling nature such that if she can't arrest it in the moment it compounds very badly, which reinforces the phenomenon - panicking about panicking. Anxiety over a panic reaction. So to be clear, it's not an allergic reaction she's experiencing but trauma from one in the past.

I think the key part is the _boiling pot_.