Stain that won't lift even in the dream

I'm standing in a living room I've never seen before, and I'm the one who has to make it right. The carpet is clean — I've already done the work — but there's still a weight in the air, like the room remembers something I don't. Then I look down and my hands are bare, no gloves. I keep rubbing at a mark on the wall that just won't lift.