If you have the coronavirus, you should continue using CPAP while sleeping alone in a separate bedroom. There is no evidence that using CPAP will cause the coronavirus to get worse.
If I have the coronavirus, how should I clean and disinfect my CPAP mask and hose?
The CDC recommends that you should clean and disinfect your medical equipment according to the manufacturer’s instructions.* The directions for CPAP masks and hoses normally include regular cleaning with soap and water.
*Keeping it clean: CPAP hygiene | Philips
*Cleaning CPAP equipment: Everything you need to know – ResMed
The CDC also recommends that you clean and disinfect frequently touched surfaces in your household. This includes door knobs, light switches and handles. Learn more from the CDC about how to clean and disinfect your household.