Im on the resmed air sense ten I dont have cancer at least I dont think I do I have bumps all over the place some of which are painful but they dont seem to be too concerned about them but I do have some blood disorders which are not cancerous noones ever told me about cpaps causing cancer so this is new knowledge to me if cpap cause cancer maybe you should ask the doctor which CPAPS would be safe to use that dont cause cancer ive never heard of a cpap emitting gasses only that it emits air