Rancher... sorry copied the wrong post.
Chickens have dander just like other animals cats and dogs, that would be more likely to cause an allergic reactions causing you to use your inhaler more ...Asthma???. Try an OTC allergy med it should help. If it doesn't get a prescription allergy med. All is in the amounts breathed in and the amount the are shedding cells and the fact the coups are more enclosed.
Then there is the added allergy tolerance load... over time you can become allergic to things you never were before.
I was never allergic to cats or dogs ... now I am. And I have Asthma so if I don't make my dosing of meds I can exhibit cold like symptoms.I hope this helps and you feel better.
I'm sorry to say that being exposed to a pathogen does not build immunity it builds the reaction to that allergic pathogen...and possibly to the point of anaphylaxis. (closure of the airway)
Dirt exposure is completely different the earth has germs that if you aren't exposed to it you never build a tolerance.
However comparing germs to an allergen is like comparing an Apple to an eagle... not even in the same ballpark. Eat dirt but don't breath the allergens without meds.