You use your CPAP for eight hours per night. Room air goes into the machine, filter, tube, mask, and nose. Over time, dust, allergens, germs, viruses, and other harmful pathogens can collect in the machinery. Then as moisture and humidity collect on the inside of your CPAP, it turns into the perfect breeding ground for mold and bacteria.
The potential risks with unsanitary equipment may also include direct exposure to bacteria, viruses, and molds. This can increase the possibility of nasty colds, sinus infections, and even pneumonia.