[nucleardog]

If you're allergic to propylene glycol then you're allergic to pretty much everything.

That same propylene glycol is used in cakes/cupcakes, frostings, many ice creams, beers (as a foaming agent), some coffees, candy, many salad dressings, flavoured coffees, dried fruits, some brands of milk, many beauty products (makeup, shampoo, soaps)...

There are a lot more people with peanut allergies and we don't ban people from eating products containing peanuts anywhere in public. Why is this case different?

[shiftpgdn]

Because you're not vaporizing peanuts and spraying it into the air where somebody with a peanut allergy has absolutely no choice but to inhale it?

[daughart]

People wear perfume. Some people are allergic to perfume. So what. At some point it's the person with the allergy's responsibility to manage their immune response through medical treatment.