What? No, CPAP makes my sleep measurably (literally) better. But yeah, different people react to them in various ways. A relative couldn't keep hers on all night for a month, while I put mine on the first night and slept like the dead, better than I had in years.

That said, I find the pneumonia story a little tough to swallow. Correlation is not always causation. CPAP machines don't spontaneously spawn new diseases. Does she use the humidifier? What water does she use? Does she change it every day?