One of my sons is allergic to peanuts (and a lot more, like dairy alas) ... but Biscoff is a saviour for a little treat! And Biscoff spread is glorious, better than peanut butter IMO

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

>Myth: Smelling an allergen can trigger anaphylaxis.

>Fact: While people often don’t like the smell of a food they’re allergic to, smell does not provoke an allergic reaction...While smells can linger in the air, the allergen proteins do not, which is why smelling a food will not trigger anaphylaxis.

https://pubmed.ncbi.nlm.nih.gov/33548082/

>Allergic reactions to airborne peanut proteins are rare and cannot be predicted by high levels of IgE-antibodies to peanut or Ara h 2. Only small amounts of biologically active peanut proteins were detected in the air and seem unlikely to trigger moderate/severe allergic reactions.

I don't have a nut allergy.