CPAP machines don't sound like a taxing jet. The sound effect associated with Mike's machine is far louder than any CPAP machine that's been on the market in the last 7 to 10 years. No, of course they don't. But this is a comedy show, not a reality show. It's done for comedic purposes.
Victoria is standing in the hallway with noise canceling headphones while Molly's mother is listening to the Mike and Molly do a cheer. The cheer ends with Go Mikey! Victoria could not possibly hear the hear the cheer. Yet the first thing she says to Mike is Go Mikey.