I had the most broken down tooth removed today. It was a horrible experience. It took about 2 hours. I wanted the entire tooth removed as opposed to drilling into the Amalgam fillings but the tooth kept breaking and the doctor had to drill anyway to break it up. Supposedly I did not swallow any of the filling, but I do smell this odor, like something is burning, like an electrical fire kind of or burned rubber. It's not bad, and I have no other symptoms other than being scared about the whole thing.