How do you stop sewer gas from coming up from the drain?

To stop sewer gas from coming up from the drain, ensure that all drain traps are filled with water, as these traps act as barriers to prevent gases from escaping. Regularly check for any leaks or dry traps, especially in infrequently used sinks or floor drains. Installing a venting system can also help maintain proper airflow and prevent gas buildup. If the problem persists, consider consulting a plumber to inspect your Plumbing for potential issues.