Dear all,

I've had a quick search through the group and have found some earlier
threads which touch on my problem, but I thought I'd run it by the
group as I'm still perplexed.

When water from the (upstairs) bathroom shower or sink is released into
the grid outside the kitchen, a noxious, sulphur/garbagey smell
overwhelms the kitchen and part of the living room. This also happens
(sometimes) when you release a sinkful of hot water from the kitchen
out into the grid. The odd thing is that the grid doesn't seem to smell
and the sink itself smells fine.

Other facts which may be relevant:

Our kitchen has a dishwasher plumbed into the sink outlet.

The kitchen and bathroom have seperate down pipes into the grid.

Does anyone have any suggestions or advice? I'd really like to have a
few ideas before I call in a plumber.

Sincere best wishes,

Pop