@inquiringminds The radiation could be causing some of that cough. My radiation was in the vicinity of the worst lung (I also have bronchiectasis) and a month or more after radiation I wound up with radiation pneumonitis. Great luck, right? But was treated for that and continued with irritating cough. I went through a lot of Riccola cough drops to help soothe cough. Found a product (NutriBiotic throat spray) which helped some. However, I was reading that during cold weather there is not enough moisture in the air so started using my vaporizer throughout the day and night and, wouldn't you know, my cough has been cut down exponentially? It at least wouldn't hurt to try a vaporizer. Hoping this helps you somewhat.