The people camped out next to us have that smell of the blue stuff found in portapoddies coming from there fifth wheel all the time. I can't open the windows without getting sick from feeling like I am in a portapoddy. I know a lot of them have formaldehyde. I know that blue stuff probably doesn't bother a lot of people, and that is fine. There may be a lot that use it. Am I smelling it because they keep their black tank trap door open so it drains the entire time? Or does that chemical smell linger because it just stays in the sewer? We don't use any of it, and don't have any problems with stuff smelling bad. I put 5 gallons of water and dump every five days and things are fine. I have been around a lot of other rv's and don't smell it, but on occasion I find that some areas of parks have that smell. It is coming from the people next door. I just want to know if it will go away after a while. We have a few more days and I just may ask to move if it doesn't.