I sourced very good Himalayan salt for the inhaler. I use it throughout the day. I was told by the doctor that the discovery of "salt air" was because children with cystic fibrosis who lived closed to the ocean had a better prognosis. So, I felt that breathing "dry, salt air" was better for my lungs than cold, moist air from the nebulizer. As I wrote, it is purely anecdotal but, for me, it paid off. Read on Chinese Medicine and the lungs, also.