I have an odor in the trailer. Its not a bad odor. I use non odor chemicals in the tanks. The odor does not seem to be from the tanks. When we camp for a week the odor is in everything including clean clothes in the drawer. I thought it might be the carpet, walls material, flooring, ect. We dont smoke and it doesn't smell like that. It's kinda like a chemical smell. We are just not sure and cannot locate it to one location. Any ideas.