The answer to 'my toilet smells bad' is that there are several common causes, including a dry wax seal, buildup in the toilet bowl or tank, or a clogged vent pipe. Symptoms may include a persistent foul odor coming from the toilet, even after cleaning. To address this, you can try DIY solutions like cleaning the toilet thoroughly, replacing the wax ring, or flushing the vent pipe. However, if the odor persists or you're unsure of the cause, it's best to call a professional plumber to diagnose and fix the issue.
A persistent toilet odor is often a sign of a deeper plumbing problem that requires expertise to resolve properly. Attempting complex repairs without the right knowledge and tools can lead to further damage or safety issues, so it's generally advisable to have a licensed plumber inspect and address the root cause.