Tips for reducing household sewer odors
After water drains from a sink or tub, the “p” trap remains filled, thus preventing gases from entering your home.
The “p” trap under every sink, tub and floor drain is a water barrier that keeps sewer odors from coming back into your house. Normal use will keep the “p” traps full of water.
Don’t make any plumbing hook-up straight into the house side sewer—always install a “p” trap.
Periodically run water through drains that aren’t used often, such as floor or garage drains or utility sinks.
Make sure all plumbing vents go outside the house. Standard plumbing per code will ensure proper venting.