I'm new too so please forgive me if I'm posting in the wrong place. I have a question about CPAP masks venting also. I have a ResMed F20 mask and I can't find vent holes anywhere. Since I have COPD in addition to OSA, I'm very worried about more carbon monoxide in my body. This is the only mask ava...

Sorry for the newb question, but while in use, my Mirage Quattro full face mask continually vents pressurized air through the small pin holes located near the top of my nose. It is continuous and actually blows on my wife, enough to blow her hair around. I understand there has to be someplace for e...