I'm with you on that one. My youngest daughter is allergic to peanuts.
Good luck.
I've kept mine alive for nine years. :-) He is at the point where he can self-monitor, although I am still sure to notify other parents at parties or sleepovers so they can be sure not to use peanuts as an ingredient. He has a reaction if he ingests peanuts, but not if he just smells it so we're lucky. He also does not seem to be allergic to peanut oil.
Beware of Chick Fil-A. They cook in peanut oil. Also, chinese food is often cooked in peanut oil. It's really not so hard to eliminate it from your child's diet once you get used to it.