I bought a device called Kan Breathe on Amazon. It’s made in Australia, I think, and clears mucus from the lungs.
Have used it once a day for a week and it can be a little uncomfortable when you are blowing hard into it to loosen mucus; but I hope it’s doing me good and strengthening my lungs as well as cleaning them; and I feel better now than I did before I started to use it.
Has anyone else tried this device?