Oh, and I was thinking of spraying febreeze odor control spray in there, letting it dry (using a small fan), and see what happens (power off of course).

I have an M series Pro cpap machine, and have had the same problem with odors. I have not used any fragrances at all. It's coming from the machine, not the mask, hose, filters, or humidifier. It started about a month after I started cpap (I've been using the machine for 3 months total). The odor to ...

Where are you keeping your cpap machine? I had mine on the carpet next to my bed, and was getting unpleasant odors in the mask. When I put it on top of a thick book so it couldn't draw air out of the carpet, the odors stopped. There are all kinds of mold, dust, and dust mites in carpet, even on the ...