Research has indicated that some CPAP users may have a greater difficulty in coughing up mucus from the lungs, which increases pulmonary aspiration. However, it has been confirmed that a CPAP machine, tubing and mask that are not well maintained can lead to bronchitis, respiratory and sinus infections as well as pneumonia. Please follow the manufacture recommended cleaning and replacement schedule for all of your CPAP supplies. If you are susceptible to any of the above reoccurring respiratory illnesses you may consider investing in a SOCLEAN sanitizing device. This will ensure the elimination of 99.9% of germs, viruses, molds and bacteria that can harbour in your PAP equipment.