For most of my life I’ve had some kind of fan on at night, even if just to have it pointed away on colder winter ones. I do feel the need for air in general to not be “stagnant” if that makes sense. That and I don’t know if it’s some mild form of tinnitus or something where sometimes I’ll get ringing in my ears if it’s too quiet.
In more recent years I’ve also been finding videos with some generic jazz, or asmr-adjacent thunderstorm videos or 8-10 hour driving through heavy rain to watch and listen to.