I take 3 inhalers for my COPD - they help a lot but make my voice very croaky. I work as a secretary so can be annoying when I'm on the phone and my voice gives out. Have seen speech therapist who gave me voice exercises which did help a bit. I've been reading up about salt caves and have bought a salt pipe. Doesn't seem to be making much of a change to my breathing but has had a positive effect on my voice. My throat doesn't seem to be so 'clogged up'. I'm hoping that if a persevere then it may have the same effect on my lungs. I'm also wondering whether to visit a salt cave - quite expensive though.