1) Food allergy 2) Inhaled allergen 
An aeroallergen (pronounced aer·o·al·ler·gen) is any airborne substance, such as pollen or spores, which triggers an allergic reaction. ==Pollens== Aeroallergens include the pollens of specific seasonal plants is commonly known as `hay fever`, because it is most prevalent during haying season, from late May to the end of June in the Northern.....
Inhaled allergen.
aeroallergen Any airborne substance that will cause the symptoms of an allergy; such as, pollens, dust, smoke, fungi, or perfumes.