For about three months, I was coughing everyday and my allergies got much worse compared to all the years before, constantly sneezing and with runny nose. Took some prescription QNase and Bria that helped but allergies and cough would come back bad if I took a break from the meds. A breathing test given by my pulmonary Dr. Indicated my lung capacity was down 15%. I really believed it because when I tried to sing, I could not utter some of the words due to lung not being able to exhale enough air. I am quite lazy (maybe partly because of chronic fatigue) so I did not clean my CPAP for more than four months. That made me think that my constant coughing and sneezing probably came from dirty CPAP equipment. I started cleaning the CPAP tubing, reservoir, and mask with dish soap once a week for about a month and my coughing lessened but still there and my allergies did not improve. Finally thought "whatever" and painfully coughed up $300 for the SoClean 2. After one day of cleaning with SoClean, I noticed my allergies improved about 70%. A few more days and was just about 10% of the worst case, which is around my normal allergy level. So far it has been about two weeks on SoClean and not using QNase nor Bria. I am so glad sneezing and runny nose are significantly better. Coughing also improved but not back to my normal level. I just can't help believe that I had a lung infection that messed me up so bad since it still kind of feels like "something" (maybe mucus but do not see it come out during cough) is slightly impeding the lung inhalation/exhalation. In any case, the SoClean drastically helped me with alleviating my allergies, moderately with my cough and much less headaches after waking up. My situation is not normal since I did not clean the CPAP equipment for several months. I am somewhat concerned about the negative effects of ozone on health and equipment, but I really do not want to experience the incessant coughing and sneezing anymore. Even if I stop being lazy and start washing the equipment regularly, I still wonder about the parts that I cannot wash such as the air passage that leads from the reservoir through the CPAP device then out through the air port that connects the tubing for the mask. At this point I am paranoid about not using the SoClean, but still checking for experiences from other SoClean users that may have had any hazardous experiences to using SoClean.