For the past few days the bathroom smells like sewage whenever the kitchen sink is ran for an extended period of time. The other faucets/shower/toilet don’t cause any odors. The kitchen is the farthest drain from the main sewer line. I don’t think it’s a p trap issue as it happens even if i just ran the bathroom faucet. I suppose it could be coming from the toilet wax seal but it’s strange that none of the other drains from the bathroom cause it, just the kitchen sink. I don’t know what to do but really would avoid paying a plumber at the moment. via /r/DIY https://ift.tt/3oMdeAJ