Hello, New home owner here.
I have a row house that has a nasty sewerage type smell that seems to be strongest in the kitchen. I have an unfinished basement under the kitchen and I had thought that was the cause. However, there are no floor drains in the basement and the plumbing runs along its ceiling and doesn't have any nasty odour. I have a de-humidifier in the basement, so I don't think it's dampness causing it. I've plunged the sinks in the kitchen and treated them with bleech and boiling water (as advised by a friend) to try and neutralise any bacteria that might be causing a stench.
I'm pretty immune to the smell now, but friends tell me it's still going strong!
Any ideas of what to look at next?