Odor Coming From Bathroom / My Bathroom Smells Like Sewage What Causes That And How Do You Fix It Kitchen Infinity / For example, a roof vent blocked by a bird's nest, leaves, or snow and ice prevents fresh air from coming into the plumbing system and preventing the sewage system from venting the way it's supposed to.
However, note that not all pipes can accommodate them being flushed down the toilet, so you may need to put used wi…