We're sorry to hear that you had this experience! Laundry detergent cannot cause bad smells. If a fresh load of laundry comes out smelling badly, it is coming from the washing machine. When a washing machine starts to smell, use Tide Washing Machine Cleaner to remove residue and eliminate any bacteria; monthly clean-outs with Tide Washing Machine Cleaner, helps keep odor-causing residues from causing odor problems down the road. Be sure to consult the owner's manual or the manufacturer's website for clean-out instructions. We definitely want to learn more about the bottle you used as well so that we can try to make this right, so please give us a call at (800) 879-8433.