effects of breathing methane/sewer gases? Home › Forums › Public Forums › Drainage & Sewerage › effects of breathing methane/sewer gases? This topic has 1 reply, 2 voices, and was last updated 24 years, 2 months ago by SylvanLMP. Viewing 1 reply thread Author Posts 3 Jul 2000 at 11:24 pm #278588 MasterPlumbersKeymaster i was wondering what are the effects of breathing methane/sewer gases. We had a leak in our apartment for almost 2 months and didnt know what it was at the time, wondering if our health was put at stake??? 4 Jul 2000 at 8:01 pm #298807 SylvanLMPParticipant certain sewer gasses are linked to some cancers and other disorders 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