@newhomeownerplanner: If your guest bathroom or basement shower randomly smells like rotten eggs or raw sewage, don't pour bleach down the pipe. Under every drain is a U-shaped bend called a P-trap. Its only job is to hold standing water, creating an airtight liquid plug that stops municipal sewer methane from entering your home. If that shower hasn't been used in 3 to 4 weeks, that water simply evaporated. Take a pitcher of tap water, pour 3 cups down the drain, and the smell disappears immediately for $0. Add a splash of mineral oil to stop the water from evaporating again. Have you ever dealt with a mystery sewer smell in an empty room? Drop a Yes or No below. #plumbing #bathroomodor #diyhome #homeowner #firsthome #hometips #plumber #sewergas