https://www.yzwc.net/product/floor-drain/ Anti-Odor Technology in Stainless Steel Floor Drains One of the primary ways stainless steel floor drains combat odors is through the use of sealing mechanisms. These can include rubber gaskets or silicone seals that create a tight seal when the drain is not in use. This prevents sewer gases from escaping into the living space. The traditional S-trap or P-trap in a stainless steel floor drain is designed to hold a small amount of water. This water acts as a barrier, preventing sewer gases from rising through the drain and into the room.