While yes sewer gas is toxic, I see no reason to panic. Do a search of plumbing and you will find numerous questions about sewer smell and successful DIY fixes. Sometimes is is as simple as dumping some water down a seldom used drain. so if you have a problem with sewer smell,Sewer vent pipes vent sewer gas from plumbing fixtures to the outside of the house. If the vent pipes aren't installed
. correctly, if they aren't high enough or if they become clogged, you may wind up with sewer gas in the house. Sewer gas is dangerous on two counts: first, it contains methane, which is flammable and explosive. Second, sewer gas can suck the oxygen out of the house and cause death. Either way, you're in big trouble, so if you smell sewer gas, don't wait?open the windows, leave the room, and call a licensed plumber
