A portable cleaning system includes a cleaning module, a portable zippered bag, and a delivery tube. The portable zippered bag is configured to receive a sleep apnea mask. The delivery tube is coupled at a proximal end to the cleaning module. The delivery tube communicates with the portable zippered bag. The cleaning module produces ozone (O.sub.3), such that O.sub.3 travels from the cleaning module to the portable zippered bag, via the delivery tube, to sterilize the sleep apnea mask.