You can wash the mask in warm water if you wish. Air does diffuse so completely that sometimes I wonder if it's coming out. But it is, or the mask would fill up and take off across the room. What pillows are you using? If the small or medium, try moving up a size. What is your pressure running at?
So if you put your fingers about 1 inch from the exhaust vents while the machine is on you feel nothing?
The air if almost fully diffuse (i.e., there is no appreciable stream) by about 4 inches.
If this is the case and you perceive a film then likely it is covered by some sort of protective (shipping?) film or some artifact of the manufacturing process that was never removed.
If so, and you cannot remove it easily then return it as defective.
Mine did NOT ship with such a film. I am hoping to receive a new one any day now (but it's been on backorder a couple of weeks) so I will check carefully when it arrives.
Sleep study AHI: 49 RDI: 60 -- APAP 10-11 w/AHI: 1.5 avg for 7-days (up due likely to hip replacement recovery)
"We can all breathe together or we will all suffocate alone."
That looks exactly right. I just now inspected my Airfit P10 and it has that same plastic. It is a micro-mesh material that keeps the exhaust from being felt more than a couple of inches away. It's why I love the Airfit P10. I switched to it because my other mask was always blowing on my arm or somewhere, making a noise and keeping me awake.