I wake up and sit bolt upright. Somethings wrong. But I don't know what. I can't breathe. Theres no air. I'm scared. I panic. Deep breath, deep breath, deep breath.
Its the middle of winter and this happens for a few nights, one or two times a night.
Finally I look at the gas fire in my room, I've been keeping it on low overnight, since there is a hole in the wall letting the cold in. There are little rings of soot around the bricks where the flames live, they're an interesting shade of yellow.
I talk to my landlord, asking him when the appliances were last checked, to which he said they are supposed to be like that, its a flame after all.
When I got home from work a few days later there were some scary red notices on all of our gas appliances saying "Condemned" and they had been disconnected from the pipe.