I am writting in regards of my kitchen sink ...Everytime I run water for 5 to 10 minutes. I have a smell of sewer gas...I and My children are complaining of headaches and heartburn I replaced the pipes under my kitchen sink and everything I do seems not to help...PLEASE help me...The water from the toilet and bathroom tub and sink kitchen sink run and drain just fine But i only get the oder when i am running water in my kitchen sink....Can you help me????Thank -you