Does your house have a sewer smell? The p-trap is the loop under the drain in the sink. That loop fills with water, which keeps the gasses out. When a homeowner has a spare bathroom or shower they rarely use, the water in that p-trap will sometimes dry out. The gasses from the sewer begin to sneak back into the home. Running water down the drain will cause the p-trap to refill, and the odor stops.
Other causes of odors are a clogged drain or broken drain pipe, a clogged vent pipe, or leaking wax ring.
If your house smells like methane gas, call Perfect Plumber, and we’ll come out and fix the problem. Sewer odors are never fun!!