Hi guys, for about a month or so now we have had a really bad smell in our house - it seems to start in the kitchen and bathroom on one side of the house (We have two bathrooms and the smell never seems to go in the second one). Now it's really hard to pinpoint where it's coming from, or why because it's there sometimes and not others. Generally speaking it's lingering first thing in the morning, and seems to be most common when we are running hot water (After showering or after washing dishes). Also it changes from stagnant water smell to rotten egg smell (although since we've had the septic tank emptied it's far more stagnant water smell than eggs) We just had a new boiler installed just before Christmas 2015 so I can't see it being the central heating, even though coincidentally it seems to be whenever we are running the central heating. The other thing we just found out (As we live in a private let) is that the home is serviced by a septic tank. Now we have just paid through the nose to have this emptied thinking that must be the problem, and yet the smell is still here. So far we have done the following: Used expensive foam-drain cleaner down all the plugholes in the house (Pre-septic tank emptying, this was a day or so before we even knew we had a septic tank) checked all the kitchen appliances for dead rodents etc (As we live in the country so thought it could have been a dead mouse somewhere) Checked the tray at the back of the fridge, but there is nothing there, it was totally dry when we looked checked the waste hose of the washing machine and put it through a service wash with cleaner Now the kitchen and bathroom that has the smell is on the same side of the house as the septic tank so is it just a normal thing? I've never had a septic tank before, but we've lived here a year now and the smell has just started so surely something has gone wrong somewhere? Any advice would be greatly appreciated. The landlord does NOT like paying out for things to be done so we want to narrow it down and try and sort it ourselves before we bother her with it. Many thanks in advance!