I'm sorry to hear you're having trouble with your therapy for your sleep apnea. It's unfortunate that you aren't a good candidate for corrective surgery.
My daughter is a sleep apnea patient, but was able to undergo the surgery to correct her deviated septum. Her doctor considered the CPAP as a last resort, if all other efforts were not successful. She was on the CPAP during her sleep test and had no problems.
You said "medical experts" suggested you were taking in, I'm assuming too much, air. Have you actually conferred with your ENT about your discomfort and possible solutions?
We do have some information on empowHer that may interest you:
Reference: Continuous Positive Airway Pressure
In His Own Words: Living with Sleep Apnea
Other Treatments for Sleep Apnea