Yes, shortly after definitively having 'something' causing chest pain and congestion, i.e. before CFS identified,
I used spray Ventolin, some preventative powder spray(?), and Theophyillin for ~ 2 years. I took these along with a lot of Entrex (guaifenasin) under the theory (by Endocrinologist) this would break up the mucosal congestion and the sprays would dialate the Aveoli so I'd get back to 'normal' and be without chest pain, sic around the rib cage.
'Normal' didn't come and my CFS paralleled press reports, and I had been to Incline Village. So I dropped the Asthma protocol (to keep rx's at a reduced level) and used Medrol packs (prednisone) ~ 3-4 times a year along with
other meds for symptoms.
FWIW, the pred treatment helped the most in my not worrying about Asthma. This was 25 years ago and I'm considering revisiting this protocol even if it's only palliative. For me chest pains around the rib cage and back have returned as one of the most identifying 'flare' features of my ME, which waxes and wanes; and I mean the pain can really be limiting.
I hope this bit of shared history helps along the lines you were exploring.