Locate and Eliminate Moldy Odor and Sewer Gas Odor

Typical sources of bathroom odors are easy to eliminate without calling a plumber.

Sewer gas odors may have many sources, but they often come from a trap that is not staying full of water. Golden Dayz/Shutterstock

Dear James: There are moldy and sewer gas odors in our bathrooms. They have tile floors. What are possible sources of the odors, and what can I do to eliminate them?—Greg N.

Dear Greg: There are many odors in a bathroom, making it difficult to distinguish among them. A sewer gas odor is often one of the more distinctive odors. Luckily, the typical sources of bathroom odors are not difficult to eliminate without needing to call a plumber.