Everything I have searched on the web has solutions for hot water coming out smelling like eggs but what about cold water? It only is in one sink and it just happened to start when we changed the faucets, it did not happen with the old faucet. The hot water coming out smells fine. I have caught the water in a glass to make sure it was not the drain pipe and to determine if it was from both temperatures. Any ideas on how to fix this? Is it from the new fixture?