I had my kitchen refurbished a few months ago so it's all new pipework under the sink but I'll have my Dad take a look and see if perhaps it's something to do with this.
Hoping that someone might be able to give me some advice... Everytime I flush my upstairs ensuite toilet or run water into the wash basin, I get a really horrible sewage smell downstairs in my kitchen which seems to waft up via the kitchen sink plug holes (I think!?) It's only just started happening...
