I have already tried some things like a oil diffuser, airing out my window, sleeping in an area where i would get fresh air, etc. I am still not sure how the taste comes back but somehow there is patm in your lungs(evidenced by the fact that patmers breath is foggier than normal) and that patm is slowly diffusing into your mouth and throat over the course of the night. I havent tried an air purifier but does anyone know a way to get rid of this? My best guess is that you need an air purifier to clean your room of your own patm then clean out your stomach with an acidic substance then finally somehow siphon out the patm air out of your lungs but i have no clue on how to siphon the air out of a persons lungs or if this is even the correct way to get rid of it.