What is horrible smell from new sink overflow hole?
I moved into a house a month ago with a remodeled bathroom and from day one there has been a toxic, glue-like smell from the sink. It appears to be coming from the overflow hole. We had the plastic drain pipes replaced with metal ones but the smell is still bad, even after we've poured water, baking soda and vinegar down the hole. Would really appreciate any advice on what it is and whether we can get rid of it. Or do we need to buy a new sink top?