How To Stop Sewer Smell From Washing Machine Drain. You'll know you have a sewer gas problem if you smell the distinct odor of rotten eggs in your home. Draining your washing machine periodically.
Sometimes, the only thing you need to do is to clean up your washing machine. Standpipe seal is a specially designed standpipe adapter that seals off the laundry standpipe in order to prevent dangerous, harmful and foul smelling sewer gases from entering into your home, while still allowing the necessary airflow into the plumbing system. Sodium hydroxide diluted in water is also recommended to wash away residue and eliminate bad smells in the pipes.