How do I stop my septic tank from smelling outside? Keep the septic tank lid sealed properly. Ensure vent pipes are clear and functioning. Maintain a healthy drain field to prevent wastewater pooling. By Sam Stewart|March 7th, 2025|How to Prevent Septic Tank Smells in Your Home and Garden|Comments Off on How do I stop my septic tank from smelling outside? Share This Story, Choose Your Platform! FacebookXRedditLinkedInWhatsAppTumblrPinterestVkEmail