I've spoken here and there about this before, but a big part of my scent kink/muskplay stems from having a really bad vision and a good sense of smell.
I rely a lot on scent as a sense, can tell when a specific person has been sitting somewhere by the scent coming off a chair or the scent in the room, as I tend to recognize people near to me by their different laundry detergent scents or perfume brands. I also call out people when they're getting too musky and they haven't noticed it yet because I can usually smell that before they do.
If I were to lose my glasses and shit, it would suck not being able to recognize faces anymore from up close, but sound and scent is still a thing I can rely on. So having characters that are into scent play and musk kind of makes sense from my personal POV.
If you were blind or your view was obscured, you could still tell it is Malin coming into a room by the abundent musky cornchips smell coming off her without her talking. Likewise, you can tell Misfit is around by their skunky scent. I find that comforting. And that's before we get into the kinky part of thing where your senses become drunk on these scents and crave close proximity with Malin or Misfit after being constantly shoved up to their armpits or buttholes, having their scents rubbed off on you over and over again until your brain can pick up the faintest trail of it.