Folks with allergies, it sucks to be you.
I have probably the stupidest one, I'm allergic to watermelon. When I was younger I got a protein bar from a health food store, and shortly after eating it I broke out in hives. We checked the wrapper - watermelon EXTRACT in a PROTEIN BAR. Who'd have thunk it? Fortunately I don't get anaphylaxis (severe allergic reaction resulting in shock). I took a shit ton of Benadryl and went into a coma-like stupor from the meds. Problem solved.
When I was mentioning bringing my cats to Alaska on another messageboard, a guy was incredulous and said that I shouldn't be allowed to do that. Whaaaa? Apparently he's severely allergic to everything and therefore thinks the rest of the world has to operate around his esoteric allergies. A woman brought a kenneled pet onto a train where he was also a passenger and he damn near went into anaphylactic shock. Dude, I am sorry about your misfortune, but life goes on around you despite your allergy. If someone on any commercial flight is severely allergic, they would have a duty to notify the airline, in which case they would say, "I'm sorry, sir, there is already someone on this flight who has booked a cat for the cabin. We can accommodate you on another flight." or possibly they'd tell me that Lenny would have to travel in the cargo compartment and have a kitty heart attack, in which case I would be forced to choose another flight.
If someone has life-threatening allergies, you can't just do all the normal shit that normal people do. I'm sorry to burst your bubble, allergy sufferers and Dairy Allergic Guy Who Hopes To Hit The Jackpot. Logic would have it that if you're violently allergic to peanuts, you would not eat at a Thai place because they use peanuts in almost everything. if you're violently allergic to dairy you would check everything before you ate it. This random person on the intarwub declares that it's your fault for not checking the burger. I'd wager that he ate it out of spite just to test the workers and hopefully win the lotto. Violently allergic to peanuts? Well, there are about a million places you can't eat and packaged products you cannot consume because they also process peanuts where the food is made. Like someone with celiac disease, you just gotta man up and party down with your special rice bread and homemade food. I'm sorry that life is so unbearably difficult for you.