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THANK YOU to all who responded! You were all helpful and supportive!
Most agreed that my theory may be true, with these additional comments:
        probably air contamination
        possibly an alergic reaction
        others have heard of people who have had to move away from areas
                where there are places that harvest grain
        built up stressors
        when we breath in air, whatever is in it will get caught in the
                mucous, and gradually will move into our throat, and
                we swallow it into our intestinal tract.

Given Suggestions to Help:
        wear a mask outdoors
        get indoor air filters
        when driving the car use the air conditioner
        to test this theory take a vacation during harvest time to an
                area that is not a harvest season.

Thanks again!!!!!!!!!!

Bonnie Hall
Upland, In.