[commodor47]

Yes, even our 2003 2720 SL will have the "new" smell when left set up (with windows & vents closed) on a hot, sunny day. There doesn't seem to be as much an odor if the trailer has been closed down for several days/months. Once we open some windows and the roof vents the trailer quickly airs out. I am more sensitive to the "new" smell than my DW. You might try leaving the windows at either end of the trailer open along with the two roof vents. That will help exchange the air inside the trailer. Also consider running the power vent (on low speed) for 30 minutes before you spend any time inside the trailer.