Welcome @sclong, If it were me, I would definitely stop using the Respify to see if may be causing the cough and if the cough continues I would have a doctor check it out. Did you just start using the CPAP cleaner or have you been using it for a long period of time?

@sclong My reaction was immediate. My breathing is sensitive to whatever is put into products for creating a scent. The Fabreeze types are toxic to me. I only use products that are odor/ scent free so perhaps I am not a good example and have nothing to offer for your post. In my experience the ozone sent me into a breathing close down. After I turned it off, I had a long recovery period. We are all different.but my guess if you developed a cough, it could be related.