I Have A Ranch House Built In 1976, It Has Hot Water Heat, Or Baseboard Heat. There Seems To Be A Smell Coming From A Small Section Of Copper Pipe That Joins Two Sections Of The Baseboard. It Is A Big Smell, However It Seems To Come And Go. I Have Talked To Two Different Boiler People They Dont Know. I Have Had A Contractor At My House He Doesnt Know. My Sewer Floor Drains Are On The Other Half Of The Basement, And All My Traps Are Full. The Septic Tank Is Working. Hopefully Someone Knows Something.