I loved seeing your suggestion of fungal infection Grizz. Oh so often overlooked and at great cost. Add to that the vast majority of fungal/asthma have much to do with Histamine Intolerance , often caused by fungal mycotoxins, its a great place to start to tackle. Sadly few know that about 10% of "allergies" are not allergies at all but Histamine Intolerance with many causes. Beauty is...there is rapid available easy inexpensive help often from methionine supplements to DAO, B6, B3 (Niacin) and others. Blessings.