Here is the weid thing... I was prescribed one of these inhalers a few years ago, when I was having trouble breathing.(we had an extended period of high heat/humidity and pollution here. It was genuinely hard to breathe.)
At the same time as the RX I was "diagnosed" with COPD...and told it would probably (could only likely) get worse.
I used the inhaler once, and determined the COPD had to go! (after an initial depression)and started doing some breathing exercises and meditating more.
After six months or so I wanted a follow-up "diagnosis" and the result was
no COPD and
no, you couldn't have got rid of it--
it doesn't happen.
You must never have had it.