If it's a sewer smell and you are sure that all of the traps have water in them, then it's likely a cracked / broken vent pipe, or a bad DIY addition where they didn't take the vent pipe all the way out through the roof (that happens more than it should because people don't want to end up with a leak in the roof).May 8, 2019,
If left unchecked, sewer gasses can be harmful to your health, home, and your plumbing system. If you smell unusual odors or sewage, it's important to call a plumber straight away.
Extending the vent pipe can help diffuse the odors, carrying them away from the yard. Carbon filters can also be placed on the top of the vent to help control odor. The filters do need to be changed regularly (typically annually) to be effective. It is important that these filters not obstruct the flow of air.Mar 25, 2021
It occurs when the P-trap is dried out or if you don't have proper ventilation to stop sewer gases from leaking into your home. Sewer gases can make you sick because they contain hydrogen sulfide (H2S) and methane. Sometimes, gases might get pulled down into the yard, hence a foul sewage smell outside your house.Apr 21, 2021
If the floor waste does have a water seal, it can sometimes emit an odour due to sediment and bacteria that sit at the bottom of the trap. Shampoos, soaps, hair and bodily fluids can congeal at the bottom of the waste, and when they accumulate, they will emit a smell.
One of the most common causes of sewage smells is a clogged drain. When your home's wastewater has nowhere to go, the odors will come back up the drain they should be going down.Dec 21, 2020
If it's really hot out, your P-traps are probably drying out. A P-trap is the little U shape in the pipe under your sink, shower, bathtub, and any other plumbing fixtures you might have in your home. The P-trap holds water to create a seal that blocks sewer gas from venting through your fixtures.
During summer many people start to notice strange or unpleasant odours in and around their homes. During the summer the heat often increases the rate in which this happens intensifying the unpleasant odours and making them much more noticeable. ...