In the last12 months I have had 4 chest infections antibiotics,steroids. My doctor changed my inhaler to Sirdupla which is helping with shortness of breath , I have had a cough which has been going on for months I feel that I can't clear my lungs and throat to the point it affects my voice. I have been cleared from throat cancer . Has anyone tried trid salt therapy either by pipe or nebuliser? Any suggestions would be welcome.