I have a 2008 Flagstaff 625D. Every fall I winterize the water system by pulling the infeed line off of the fresh water holding tank, sticking it in a 10 gallon pail of RV antifreeze, switch on the 12V pump and open all of the faucets (hot and cold) one at a time until the pink stuff flows out. I have had this popup since 2012 and have winterized it this way each fall. I do drain the H/W tank beforehand, bypass it using the valves and clean the anode before I winterize. Well this year while running the sink on a recent trip(hooked up to city water, not running off of the freshwater tank) I noticed a bad odor coming from the water out of the sink tap. I checked the water from the campground spigot, it was odor-free. Has anyone else experienced this? It also smells coming out of the outdoor shower head. Could it be the pex lines? Or maybe my white hose from the campground water tap to my camper? Is it from the RV antifreeze? I smell it when running both hot and cold water. Any help or advice is much appreciated!