When we have family gatherings, there is no peanut anything around, which we are so thankful that family and friends understand her allergy and that it is air born. Proof of that at a baseball game last year. People behind us were eating peanuts and throwing the shell's on the ground. Halie was breathing in the peanut dust or whatever you want to call it and started getting woozy and falling over. :/ Needless to say, we left right away and she started feeling much better within a matter of minutes.
Our biggest thing is keeping an eye at her at church. We have only been going there for a little over a month now and not a lot of people are aware of allergy, however her Sunday School teacher is very much aware. We keep a snack at church in her classroom for Halie to eat at snack time, and the kids do wash their hands after they eat their snack. Thankfully the teach doesn't bring peanut/nut products in but some items are still made in the same factory as peanuts/nuts.
Halie does wear a peanut allergy alert bracelet and knows to always ask me or daddy to have something if someone wants to give her food. AND we do practice with her to say that she has a peanut allergy and to ask mom and dad if she can have that snack. Thankfully the only reaction she has ever had was when we first learned of her severe allergy when she was around age 1.