I live in a 1970's duplex which have baseboard heaters, probably original. They worked fine until last year. Now, when turned on, one of the heaters in my bedroom gives off an awful odor like urine. There is no odor when the heaters are off.
Is there a way that the heater can be safely dismantled and the odor eliminated? I don't want to spend another winter using a space heater! BTW, I have 2 cats. Help!