Roy, a suggestion to help it sell when you get ready.. take all the cushions and fabric things that can be removed without destroying and sit out in the sun a whole day. Leave RV windows and doors open so lots of fresh air can get in. You would be surprised how much fresher it will smell if all the cushions, mattresses, etc go outside in the sun for a day. The sunshine will kill all the closed up, unused, musty, dusty smell.