Was given a machine with no humidifier, which was totally useless. Once I got the humidifier added,
CPAP eliminated my daytime sleepiness. I wanted to make
CPAP work better, tried prescription nasal spray, still only one nostril open. Went on an elimination diet searching for food allergies/sensitivities. Bingo. Eliminated two very common foods, and both my nostrils are now wide open with no blockage. I kept getting periodic sinus infections from the CPAP.