I’ve lived in a couple of apartments in Norway where they had a genius solution to the problems you mention (except the jet engine sound): it sends all odours to your NEIGHBOURS who have their kitchen right above or below yours 😎

(warning:it works both ways. So if your neighbours are cooking you better turn it on, and you better set it to superjet mode, because the strongest decides where the odours go.)

Sorry everyone but you’re all missing the obvious. You see that APPARENTLY there’s no WC in the bathroom? Well there you go. When you’re done, close the door, and it’s nicely mimetized as a drying cabinet 😎

I can’t stop imagining a TV screen beside the shower, just outside the photo…