My mom touched none washed potatos then undid the dishwasher. So i rinsed my plate & glass & fork for 10 minutes with hot water under the sink. would that be enough to kill the listeria? also after the potatos were washed and cooked (not skinned) i heated them up for a minute in the microwave. is that necessary? help. if she touched a fork and i ate with it will that hurt my baby