Why is this even a debate? Completely non-essential activity in an enclosed space with recycled air causes mortal risk to some people... so get your head out of your arse and refrain from participating in this non-essential activity FOR A FEW HOURS whilst in that environment.
I've seen people complain that their DC aren't allowed to take nuts to school as there is a child in attendance with a deathly allergy. Rather than thinking about the devastating ramifications for that child, the adults working in the school who need to monitor the child, and the effect a death of a child could have on their fellow pupils, they moan because their DC loves nuts and they are healthy and easy blah, blah, blah.
People can cope without their nut snacks for a few hours FFS and I say that as someone who eats nuts every day and bloody loves them.
Obviously you can't ban nuts from every public place but surely we can use some common sense and work out situations where risk to the minority outweighs non-essential pleasure of the majority for a few hours.