Here's a story from around 14 years ago where this was a serious problem [1]. I could probably find more from 20 years ago if I looked further.
[1] https://abcnews.go.com/Health/AllergiesNews/story?id=4659705...
[1] https://abcnews.go.com/Health/AllergiesNews/story?id=4659705...
I'm sure you can find an article about peanut allergies at any point in recorded history where they had peanuts.
This sounds completely absurd and hyperbolic, but let's say I took it at face value - why is this an issue now and not an issue when I was in school?