My DS (now 7) is allergic to tree nuts, specifically hazlenuts, cashew nuts and pistachios, but has to avoid all nuts. My DD1 (4) has no sign of any allergies or the eczema and asthma that her brother has but eats very little anyway. I am now thinking of trying peanut butter in a sandwich for my DD2 who is 14 months old but I am a bit nervous about possible reactions. What have other people done with the younger ones in their family if the older children have an allergy? Is it best just to avoid it and be on the safe side? Any advice appreciated.