I am extremely allergic to shellfish and carry an emergency kit with me at all times. Frankly I don't know what I would do if someone on a flight had an allergic reaction to peanuts or whatever. I'm not a medical person. I am trained to help myself, not the next person. Do airplanes carry emergency kits for allergic reactions?
I am not bothered if someone sitting next to me eats shrimp....just don't kiss me!