Or house has a main bathroom and a couple of ensuite/toilets, all running into a septic tank. The main drain/sink pipe is outside the main bathroom.
Often, having a bath in the main bathroom, there'll suddenly be an unpleasant swamp gas smell. I think I've narrowed it down to when another toilet or shower is running.
It's only this room that you get the smell. I've tried to narrow it down to see if it's coming from the sink/shower/bath/toilet thinking it might be faulty trap, without success.
How can I figure out the cause? Is this a classic sign of a very obvious problem or could it require a lot of investigation?
Often, having a bath in the main bathroom, there'll suddenly be an unpleasant swamp gas smell. I think I've narrowed it down to when another toilet or shower is running.
It's only this room that you get the smell. I've tried to narrow it down to see if it's coming from the sink/shower/bath/toilet thinking it might be faulty trap, without success.
How can I figure out the cause? Is this a classic sign of a very obvious problem or could it require a lot of investigation?