Sulfur smell from cold water:
The ECOsmarte titanium electrodes convert sulfur gas to a solid that will be filtered out, resulting in no smell.
If there is sulfur odor in the cold water, check that the titanium chamber is clean and operating properly.
Sulfur smell from hot water, but not cold water:
If the hot water smells, but the cold water is fine, then bacteria is building up in the hot water tank. The best way to fix this is to replace the standard sacrificial anode rod in the hot water tank with a Corroprotec Powered Anode Rod. To learn how this works, go to https://www.corroprotec.com