i have not yet tried this, but i heard it works, leave a bale of hay in the room that stinks of smoke (i'm thinking open it and spread it out, but i was nbot told to do so) and leave it for a time (i'm also thinking a week) the house i am buying the smell is in the garage so this would be easy to do, where i wouldn't want to do that in my bedroom. if anyone tries it and it works let us all know