odor in water comimg from only hot water faucets.
It could be a build up of sulfur (boiled egg smell) from a mineral reaction from non use. Well water seems to cause it to happen a little quicker. If you have a Suburban heater, it may need an anode rod which helps to keep the smell down but will not stops the smell from months of non use. We very seldom have a smell problem because we use ours almost real often. If you have the ability to just flush the water heater with fresh city water, you odor will disappear.
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