i use my cpap when i have a cold but it is important to make sure your airway (nasal airway with my cpap) is open. i use saline nasal spray and some nose-blowing but even then my nasal passage may become compromised in the middle of the night. the cpap will not cause sinusitis but certainly colds can set the stage for a secondary sinus infection especially if you are prone to them.
do i use cpap machine when i have a cold and will it cause a sinus infection?