How To Clean Candle Smoke Off Walls. First, vacuum the wall with an upholstery attachment to remove as much soot as possible. You may need to repeat this process a few times before the wall or ceiling is completely cleaned.
Do not scrub with a chemical sponge. How to clean & remove smoke soot from walls soot, the black residue left behind after a fire, results from the burning of various materials including wood, plaster, natural fibers, synthetics, foams, and plastics. The only thing i have ever had success with in washing off candle smoke from wallpaper is magic eraser.