Scrub and clean every surface with soap and water, this means the over head fans and skylights, A/C unbolt the lower part to clean the ducts, filters and carefully clean the fins on the cooling unit and around it, then take all the drawers out and clean in order to have access to the interior of all cabinet surfaces, take all drapes and valances out and wash several times remove the foam from seat and couch cushions and purchase new foam cushions, clean the dashboard as best as possible and front seats too, then clean as much off the carpet as you can remember that on some units there will be carpeting under furniture that is practically impossible to clean.
After you have done all of this you have an RV that still STINKS!
Go buy a new one with new car smell in it, you will regret purchasing the smelly one.
For all of you smokers out there, I started smoking a pipe, then cigarettes and then stopped more than 30 years ago, I do not object to a person smoking, I move up wind.
navegator