We have a rental house that sat empty for several months. During that
time, I left the gas water heater on the "Vacation" setting, to keep the
pilot lit, and keep some warmth in the pipes during what passes for
"cold" weather in the NW. Now there is a strong sulphur odor from the
hot water. A renter has only just moved in, so I'm not sure yet if the
odor will go away with regular use. If not, should I drain the tank, or
are there other things I should try?