Such customers would probably rather cling to their fear than be corrected and assured by their physicians that their concerns are way overblown. Just take a look at how the anti-vaccine craziness grew to crisis proportions.

And to put this in perspective, the airport that this NRSA used probably has plenty of nut particles in the air already. Furthermore, the seat that she sat in probably has nut crumbs as well. Unless her fellow passenger has the table manners of Cookie Monster, I doubt that she was every in any danger.