Based on my own experience, buffer zones are pointless because of the poor job the airlines typically do cleaning planes in between flights. I have a peanut-allergic child, and even with an announced buffer zone, there are usually peanuts stuck in the seat cushions or lying on the floor from the previous flight. Either a particular airplane should be peanut-free or not; the intermediate solution isn’t much of a solution.
Based on my own experience, buffer zones are pointless because of the poor job the airlines typically do cleaning planes in between flights. I have a peanut-allergic child, and even with an announced buffer zone, there are usually peanuts stuck in the seat cushions or lying on the floor from the previous flight. Either a particular airplane should be peanut-free or not; the intermediate solution isn’t much of a solution.