Asthma Support Group
Asthma is a disease of the human respiratory system where the airways narrow, often in response to a "trigger" such as exposure to an allergen, cold air, exercise, or emotional stress. This airway narrowing causes symptoms such as wheezing, shortness of breath, chest tightness, and coughing, which respond to bronchodilators.
i have heard this being really common with dust mites too. i dont have asthma, but i have bad allergies (like, currently on 5 years of allergy shots and just had nose surgery bad) and dust mites are murder for me. i use this spray that is kinda like fabreeze, but it doesnt leave a perfume and kills dust mites. its made a BIG difference for me. i use it every time i change the bed sheets and vacuum.