I grew up in peanut country. All the kids helped during the harvest. Everyone and everything was covered in peanut dust. During that same time, there was government peanut butter for the poor and for the schools. Every day, the lunchroom ladies put some form of peanut butter on our trays. A peanut butter cookie. A Dixie cup of peanut butter and honey. A blob of peanut butter with an apple. No one ever died of a peanut allergy.
That’s not saying there isn’t such a thing as people are allergic to various things. There’s ragweed allergies in the Spring which is a major complaint right now. When I was little, mom thought I was allergic to the red dye or flavoring in strawberry soda because I’d break out in hives but apparently I grew out of that quickly.
Truth be told, there are much worse ickies on shopping carts than peanut butter and jelly.
A lot of people get itchy after eating strawberries, so back in the day you just learned not to gorge on them. I used to get a headache after dinner every Friday night, which is when my mom served hotdogs. I was accused of faking, which was not pleasant; and not eating "what was put in front of you" was not an option, either. Decades later, meat processers were regulated to stop using chemical nitrites and nitrates in hotdog production. Problem solved.