My husband and I are purchasing a home in which the current owner is a chain smoker. We are concerned about the odor the years of smoking in this house might leave behind. All the floor surfaces throughout the home are hardwoord and all walls are plaster, & painted (no wallpaper). We will be painting all the walls and ceilings and re-finishing the hardwood before moving in. I am wondering if there are any recommendations you might have to "treat" the surfaces to be sure the smoke smell is gone before priming, painting & re-finishing occurs. We would sincerely appreciate any advice anyone can offer to be sure this horrible smoke odor doesn't seep through our fresh paint!