SMELLY FLOOR DRAIN Home › Forums › Public Forums › Drainage & Sewerage › SMELLY FLOOR DRAIN This topic has 1 reply, 2 voices, and was last updated 20 years, 4 months ago by Retired plbg1. Viewing 1 reply thread Author Posts 29 Jun 2004 at 1:51 am #279397 MasterPlumbersKeymaster I have a basement laundry in my apartment. The washer drains into a floor drain. There is a musty smell that is taking over the apartment. What can I do to stop the drain smell? 29 Jun 2004 at 10:27 am #300753 Retired plbg1Participant Does the drain have a trap. You can use bleach, baking soda and vinegar,Dishwasher soap powder and also they might sell something at box stores. Author Posts Viewing 1 reply thread You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In