I have been sob with a cough about a month ago and had to use my rescue pack. I had a COPD check with the Drs last Friday and told him about how I was still sob so he checked my chest and said it was clear and that I seemed very anxious, I have to go back and see him in 5 weeks time. My son told me about a friend of theirs who has opened up a Salt Cave in her house I suppose a Franchise so tomorrow I am going for my free trial and it is supposed be relaxing as well as help with your breathing. If it helps I am going to take the option of 20 sessions I will try anything to help this sob problem. I have been using my aerosure and my Salt Pipe and these seem to be helping me so I am keeping my fingers crossed.