This is COPD. (I don’t know why they don’t just call it “The Disease That Smothers You To Death.”) Pertussis, asthma, Valley Fever and asbestos damage to my lungs. Or, as one doctor put it, “your lungs have been insulted.”
I’ve heard of the washable filters, but I’ve never heard of anyone who has had them.
They're coming pretty standard in digs they build now.