I'm guessing it's an infection or something like that
When I was at the assembly place, it was really cold because it was for foodstuffs
And lots of people around getting up close to you since there's very little space
It's the perfect condition for something to spread
On the other hand, I've had peanut butter for the first time in a while, and I heard it's possible to develop allergies you didn't have later in life, so maybe that's it
Edit: I do have some honey, maybe if I'm having a hard time sleeping I'll get up and try it, thanks