When selling a home, the two types of smells that turn away more buyers are pets and smoke from pipes, cigars or cigarettes. If the home, you are trying to sell has a lot of carpet there is a good chance you will need to replace it prior to listing. If you decide to replace the carpet a tip is buying lower grade carpet, but a higher-grade padding to give more cushion and better feel. For smoke smells, a cheaper alternative to costly repairs is trying an Ozone treatment in the house first and cleaning the carpets.