The Lumin is Dissimilar to most CPAP cleaning devices. This dissimilarity is that the Lumin uses UV light to cleanse your CPAP’s equipment. Most CPAP disinfection units utilize the sanitization power of ozone or activated oxygen. The ozone can have a somewhat off-putting and strong odor. Because the Lumin does not use the activated oxygen, it does not leave the same smell. Unlike the other CPAP cleaning devices, the Lumin should not add any scents to your CPAP’s equipment because there are no added cleaning agents other than light, and light does not typically have an odor to it. You will find that after utilizing the Lumin to cleanse your gear, there should be no lasting smell, just 99% germ-free CPAP equipment ready for use!