well. peanuts are a legumme and yr son is allergic to two of them already, soya and chickpea, however, if consumed with not reaction, and they are not cross contaminated with any other nuts, i would carry on.
certainly , the loose stools can be an allergic reaction, so its worth considering another allergen in the mix that needs to be removed from the diet. although i am sure that must be under medical investigation anyway?(ok with eggs ?)
the school already have taken steps to box and label your childs nappy stuff, so why are they being so over the top? are they a chain nursery? can u ring head office?
lets chill on the airbourne vapour with peanut oil stuff everyone....(parents of allergic kids do have regular freak outs for a very good reason, lets calm down on ideas like this that are hazy etc)
quite a lot of ige allergens are airbourne, shellfish is the more problematic one for those with asthma and the allergy.
its difficult for an oil to break down to become an arerosol , much more of a problem would be dry roasted peanuts that are more of a problem.
those who do react, very rarely go in to full blown anaphylaxis, and have mild reactions or ones easily resolved with anti histamine.
cross contamination is more of an issue in the form of peanut butter, IMO as it does spread and cling to surfaces, but is easily removed with washing up liquid and hot water. (bleach doesnt work btw)
its entirely possible for an allergic child to be included in a day nursery, but in this artifical environment, accidents can happen easily and need constant high vigilance, and often reactions happen with very young children , simply because they are eating food that they may not have tried before. allergies always seem to be a more common food. so emergency training, with management training is really required. school nurses do the former, parents do the latter.
(i.e YOU tell them how to keep yr child safe, just because they have had a allergic child in setting before, doesnt mean that they understand fully what a multiple allergic kids need to avoid.)
As a parent, i wouldnt just talk to the head of the setting, but the key worker , room worker, and ask for certain procedures and photos, and read the general allergy policy and indvidual one, of which the latter should be constructed between you and the medical professional and the staff.
I would also inspect the kitchen, and cook directly to the cook.
as a precaution to the cook being absent and agency cook stepping in, i would provide a safe emergency long life lunch or snack, just in case.
or i would provide all food myself and if it needs reheating, inspect the microwave used and ask what food is re-heated in it?