It's important to build on solid foundations, rather than on faulty assumptions. My experience is the standard medical approach to lung problems is basically wrong.
There was a submission ~6 years ago about using ethanol to sanitize people's lungs as a treatment for COVID-19. One of the comments shared a college story about how they were coerced into treating their sniffles with a spoon and vodka: https://news.ycombinator.com/item?id=22745834
In early 2020 I started advocating using the classic herbal treatment for lung problems: apple brandy inhaled from a charred oak keg. The theory is simply that the ethanol is an antiseptic, and the apple and oak flavoring compounds stimulate the lungs to repair themselves.
I found a manufacturer and started selling little 3L kegs. My first customer asked, "can I try it?" I warned that the ethanol burns before you get used to it. I was impressed that he was able to fill his lungs with apple brandy fumes without coughing the first time. After a moment of held breath he darted off. When he came back 1 or 2 minutes later he said, "I'll take one".
He was a big guy. His problem was getting winded between his car and the store. That he could walk for one or two minutes on lungs filled with apple brandy fumes, when he couldn't normally walk without getting winded while breathing normally, was incredible.
2 hours later he called back. The husband of the woman he'd been the driver for that day was ~70 year old husband and coughing himself to death with a case of the COPD. He'd quit smoking ~20 years before, but his lungs never recovered.
Both of these men's lung conditions rapidly improved after they started inhaling apple brandy fumes. After he started huffing on apple brandy 4x/day, the COPD fellow's coughs went away, and his skin went from 'gray' to 'pink'. The other fellow caught the COVID-19 in June or July that year. I heard his lung capacity score was fantastic, the virus was just hitting his kidneys. He survived his hospitalization.
The modern tool that facilitates the inhalation of apple brandy is a nebulizer.
Different story: in 2021/2022 I was emailed by a woman who'd found my youtube video. In 2023 she came out to Arizona to visit, then to stay permanently. She always assumed that her lung problems were related to the asbestos she'd inhaled on 9/11. But since she's started using the apple brandy barrel, she's only had to use her inhaler once in the past 3 years: when she got a lung full of hairspray in the gym's bathroom.
As the submission in the link above indicated at the start of COVID-19, treatment with inhaled ethanol is a reasonable initial treatment for respiratory problems.