I have a 3year old and a 20 month old, and have never given them nuts, or anything with nuts in them . Now we are doing quite a bit of cake baking, and wonder if I am being over cautious not using any form of nuts. My three year old does accasionally come out in a rash which is terribly itchy, but we cannot pin point what it is, and I suppose I worry that if he has a nut allergy then what do I do?