I had gone through your query and understand your concern.
You are talented enough that you have found out the cause of your allergy.
Earlier you mentioned that you had been suffering from dust allergy
,later you also mentioned particular food allergy
If I were your treating physician ,I would look for symptoms of
,nasal blockage,nasal irritation etc)
then treat accordingly.
The best treatment of allergy is to avoid allergens so far it is possible and you will be remain symptom free.
If you do not have any problems other than food allergy please try to avoid those food.
If you currently have allergic rash
or itching,you may take antihistamine like cetrizine.
You may follow the above advice for your allergy and observe for few days.
If it is not improved,please contact with with local doctor for confirming the diagnosis and treatment accordingly.
Hope this answers you.
Wish you good health