GaryPurolite1
A water softener will not remove any sulfur odor causer. A water softener only softens water if it is mechanically functioning correctly. I agree with Dave that you should have it checked.
You should also have your water tested to determine what it’s problems are and then proceed to correct whateve is called for.
Sulfur odor can be caused by Sulfate Reducing Bacteria. Not harmful but odor nuisance causers. Chlorination can correct that. It can also be caused by the Mag Rod in your water heater. That can be corrected by removing it. Check with your plumber to do that.
The softener may need cleaning since you indicate staining. Check with a local water treatment specialist or the supplier of your softener. Iron can foul the water softener resin but can usually be cleaned to eliminate it.
