could be the water... smell your water.
here in florida we have water that literally smells like the business end of a cow

its horrid... sulphur water ... yuckkk outside at night when the sprinklers come on it smells like a cow pasture

sometimes the water smells more than other times ... we have a water cooler and get water delivered to the house in those huge 5 gallon jugs and it has the temperature controls on it, for hot cold and 'normal' water ... i use that water for EVERYTHING including birdie bath water ... i cant even stomach turning the sink on to wash dishes half the time