Okay...compare an almost 2 year old silicone cushion to a brand new cushion. A bit yellow as I expected and very minimal cloudiness.
Can you get us a picture of yours?
While I was at it I did take it apart and change the filter on the bikini thong. The filter I used was the cheap generic mesh like filter and not the more dense hypoallergenic filter. I didn't try to deconstruct this one. Just cut a piece to size and stuck it on and trimmed around the edges. It doesn't deconstruct well..the hypoallergenic filter I normally use will deconstruct into layers a bit. I think a lot will depend on the cpap filter that is used. I am not afraid to use the full density of this filter. I have used it before crammed up and wired tight around the vent holes before I got the bikini holder thingy. I will use it tonight...if I have a problem I will let everyone know but I don't anticipate any problems. There are a lot more vent holes available than is technically or engineer spec for adequate carbon dioxide cleaning out.
The hypoallergenic filter is on the left...the other 2 are different brands of the generic mesh like filters.