I live in a townhouse that is over 100 years old. I love the house, but my next-door neighbor smokes a lot and I can smell the smoke in my house. Is there anything I can do to block the smoke from coming over? I have an air purifier and that helps a little, but the house is 3 stories so it can't cover the whole thing. I am a new homeowner, so I don't have tons of money to pour into this right now. Any advice or encouragement is welcome! Thanks!