Could it be noxious fumes?

That could be exhaust fumes coming up through the floorboards.

The fumes must be getting to you.

Sweetie, you must be running on fumes by now.

I wouldn't be breathing gas fumes alI night!

I wouldn't be breathing gas fumes all night!

Duncan's two chamberlains will I with wine so convince... ...that memory, the warder of the brain, shall be a fume.

You rep this up now, Or you'll be sucking fumes on a parking scooter. In a stagnant island. You got it?

31.4.3.2.1 All experiments shall be performed in a fume hood in a room that may be well ventilated.

Oh, and I'm having my apartment painted, and it's not good for me to be around the fumes when we're trying to have a baby.