You have a wax seal ring beneath your toilet that keeps in the sewer gas that is displaced every time you flush. When that ring is damaged the gas escapes out between the floor and the toilet, causing a bad smell. If your toilet seems to rock when you sit down, there is a good chance your wax ring is broken.Jun 28, 2017,
Broken, Clogged or Poorly Installed Vent Pipes The vent pipe is your sewerage system's breather. When it gets clogged, the sewer gases can back up into the sinks and the toilet, resulting in your bathroom's sewage smells.Mar 8, 2021
Add one cup of baking soda to the clogged toilet or slow drain, then wait a few minutes. Follow with two cups of vinegar. Listen for bubbling and sizzling noises to indicate that the mixture is working. Wait another couple of minutes before either flushing the toilet or running water down the drain.
The wax seal is broken.nnThe wax seal helps to keep in water from the base of your toilet, as well as any odors. When the seal is broken, sewer smell from the drain pipe can come out when you flush. If the wax seal is broken badly, you run the risk of water damage.