Children can be allergic to bananas but often they are just reacting to the natural chemical called tyramine found in bananas.Tyramine levels are higher in very ripe bananas.From your excellent description of your little girl's symptoms it seems that she may be reacting to a preservative or colouring used in the Stumpies or the sauce on the chicken steaklets. The most likely preservative to cause her to cough like this is sulphur dioxide, but benzyl benzoate can also do this. Try to avoid all foods which may contain these preservatives. Read labels carefully and preferably prepare all your own foods rather than buying factory prepared foods such as the chicken steaklets.
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