Need suggestions to prevent cigarette and weed smoke entering house via windows. : r Home Vaping: Safe? Or Are Your Lungs Going Up In Smoke? Can Marijuana Smoke Stain Walls? Gamut Packaging Thirdhand Smoke Resource Center Protecting Californians Does vaping indoors cause mould and stains on the wall? Cumnock Chronicle Pocket hookahs proliferate with young marijuana users, sources say The Denver Post