I have a sulphur smell that comes from the cold water faucet in my kitchen only. I am on a well with the water tank in my garage. It is not the closest faucet to the tank. Outside faucets do not have the smell nor any others in my house. We replaced the faucet in November 2012. My other kitchen faucet had an odor and I was told to replace the lines under the sink to the faucet. That worked for a while. Now, I have the smell with the new faucet. What do I do?