How do I know if I have sewer gas smell?
How do I know if I have sewer gas smell?

What do you do if your house smells like sewer?

If the smell persists, try pouring a quart of water into every drain in your home, including the sink and the toilet. If the odor remains after running water through all drains, you are probably dealing with an old or leaky P-trap. For the best results, contact a professional plumber to examine and replace your P-trap.