If it were me on that flight with you, I'd rather we all just not eat nuts for a few hours rather than having to make an emergency landing and maybe watch you die of anaphylactic shock! It's not a big hardship to refrain from eating one particular food for a few hours -- even on an overseas flight, we're probably talking refraining from eating one food for 8 hours. I can do that. If I can't go 8 hours without eating nuts, I have a problem worse than yours.