We were camping this weekend and my wife complained that the A/C duct smelled (it wasn't warm, we were just using the dry mode to keep condensation down). I wouldn't say it stinks, but it has a peculiar smell. Similar to that of some cars when the A/C is left on all the time. It also smells when just the fan is on without the A/C. Anyone else notice this, and is there anything that can be done about it?