Buttermilk, cranberry juice, parsley, and yogurt can also prevent odor. Crackers, toast, and yogurt can help to reduce gas, which in turn aids in odor control. There is some evidence that bismuth subsalicylate can also assist in reducing odors in those patients where use is not contraindicated. Commercial odor-control products also are available for purchase. The WOCN can help with the selection of odorcontrol strategies