Long rambling post, sorry!
I am being driven mad by a foul smell of drains coming up from under the floorboards in our house. I thought at first a mouse or something had died under there, but it's got gradually more 'cabbagy' which makes me think it must be drains. It started on 23rd Dec and has got gradually worse over Xmas. ( Lovely!)
I have been round and sniffed all the sinks and loos etc, and it's not coming from them. There aren't any blockages - everything seems to be working perfectly, touch wood.I bleached them all just in case, and cleared and bleached the two drain holes I could find outside, plus made sure ventilation bricks etc were clear. We can't lift the floorboards because we have solid wood floor laid over underfloor heating, but when you put your nose to the skirting boards it's definitely coming up from underneath the floor! I know the main soil pipe runs under the sitting room and out to the back - could it be broken or something? Never had any problems before. I would have a look down the manhole but unfortunately the inspection chamber is difficult to get to as it's under decking...
The only thing that's weird is that the people in the flat next door have had lots of plumbers rodding and powerflushing for a blocked loo and fixing a leaking rising main over the past few months, and they've been away for Xmas and left a tap running in their bathroom ( we can hear it in the garden) while they've been away. Could that have anything to do with it?
Going to call Dynorod on Monday if it doesn't clear up but if there are any plumbers out there with any ideas I'd be very grateful - not sure what's worse, the smell of drains or the horrible vanilla plug -in I am using to try and cover it!