Help!!!!! We have Pegasus copper kitchen sink. It smells terrible. Like the metal and not sewer gas. We have checked the plumbing under the sink with is only a one year old. Everything is fine with that. We have plugged both sides of the sink, so we know the smell in not coming from the plumbing. I clean the sink daily with dishwashing soap. We leave any dirt dishes on the counter and not in the sink. We also have a hammered copper sink in the bathroom. It never smells or stains. ...