I had a room mate in a small house I rented and while he was a very personable guy to everyone he met, he was an absolute pig in private.
He’d use all of my dishes and hated to wash any, so when I decided to protest by letting them pile up, when we ran out, he bought paper plates and microwave food! When the pile in the sink started smelling like a septic tank, I washed them.
His room had no clear floor space left because of stinking, dirty clothing, assorted paper plates with mummified or festering food scattered about, stacks of Newsweek (he fancied himself an intellectual and read only Newsweek), scatters of newspaper, cups, glasses and ashtrays packed with cigarette butts, partially consumed bags of snack foods and quarts of milk, always with about an inch left in the bottom, souring. I bolted a smoke detector on his door.
Eventually, I threw him out and he left a lot of trash behind. His bed was mine and I pitched that because it reeked! I figure he changed the sheets once a year. They were yellow with body oils! I found, in the closet, milk and soda jugs full of pee! Gallons of it! He was too lazy to get up and walk to the bathroom down the hall!
I also discovered where all of the roaches were coming from, along with ants – his room. His bed was in a corner and the wall at the head was white. (Note: Was!) Since he worked as a printer for a local paper, he got covered in ink mist. He leaned against the wall to watch his TV. The wall was black in that spot.
He showered a lot, daily, but each lasted like 5 minutes and bars of soap in the shower seemed only to shrink when I used them.
The worst part was hauling out the piss bottles! The garbage men got a surprise! I threw out everything, had to steam clean the carpet, scrub down and repaint the walls and bug spray the whole house! Then I bough several of those cheap bottles of liquid potpourri, (mulberry scent) and poured them in a yard sprayer and sprayed the room.
It took me a month to get the room rentable again. The stink even got into the window air conditioner! I had to flush it with a watered down bleach solution and replace the filters!
So, if your roomie is only using scented oils and such, enjoy it. You could get the ‘Pig From Hell’ like I had.