Europe has a more established system of health clinics that are the embodiment of holistic treatment of the whole person. Health Spas in both Eastern and Western Europe have addressed respiratory diseases, CF in particular built from a traditional form of treatment before doctors could just give you a pill. I watched a documentary a couple years back on undergound health spas built in spent areas of salt mines. in Places like Prauge where a gigantic salt dome lies just below the surface and is larger than the city proper, asthmatics, CFers, and others with respiratory illnesses have been using abandoned underground salt mines and even uranium or pitchblend mines have been used and are still in use. It was believed and still many swear by radium treatment or running around in an atmosphere with loads of radon gas. I'd probably skip the radium/radon treatment but the saturated environment of exposure to salt rooms a thousand feet down has done wonders for many. If the idea of two weeks in a ten thousand foot deep salt dome, healthy meals, and many healthful and healthy services sounds like a dream but for those who don't like the idea of being in a confined space, Switzerland has healthy air in mountain health retreats and spas. Take your pick, Scandinavia, Eastern or western Europe, and Britannia are full of spas and the highest concentrations of CFers and others with hereditary respiratory diseases.
Hot Springs or mineral springs are also good sources of health retreats. The Rocky Mountains offer a lot of hot springs and I even took a trip some years back, touring about a dozen private and municipal hot springs. Beginning West of Denver Colorado, up through Saratoga Wyoming near Laramie, to the center of the State, Thermopolis, my favorite and generally secret hot springs is connected to Yellowstone's gigantic geothermal setting, If you go up through Bozeman MT following a string of hot springs and mineral springs over the Coninental divide down into the Bitterroot Valley toward Spokane all the way to Seattle if you wish. A lot of alternative medicine has made the Bitterroot Valley onto the Pacific coast. Darby Mt is about the epicenter. I don't know a specific source or location but that is your quest.
If you look, you will find something that will meet your needs, Good Luck,
LL
I would suggest you focus your search for respiratory disease clinics using key words like salt inhalation caverns, Eastern Europe and such. Contact various country's departments of Tourism to get help finding how the various clinics are listed and grouped so you can see all that is available. Clinic vacations or whatever you want to call it. Europeans are in the habit of using happy terms for their many curative spas, it is deeply engrained in their health care culture. You may find some of the best and affordable health spas in Poland, and other former Eastern Bloc countries.
In the U.S. I would suggest you form your own team using available practitioners from disciplines you want to utilize.