People tap-tap-tapping at their fucking phones gets the same reaction from me. Of course it's irrational for me to feel this way, so I've learned to ignore it.
I am extraordinarily allergic to the glycol in e-cigs. Just a few seconds of exposure is enough to send me into anaphylaxis. I am pretty sure somebody tapping away on their phone wont kill you.
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?
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.
I assume you are also allergic to hospital wards, which maintain a concentration of vaporized propylene glycol in their HVAC systems to prevent cross-infection?