I had a smell I could not figure out, it was the washer P trap had gone empty and the gray tank STUNK (in my Monaco/Safari). Ran a load of clothes and problem solved.
Now, I put new Toyos on mine too and my wife kept saying "Somebody stepped in dog poo" (She didn't say poo). I bet I had to tell her a dozen times it was the tires!
2018 Rockwood 2304DS Ultra Light pulled by 2018 Ram 2500 Cummins Diesel 4x4