Citrus fragrances, such as Lysol Neutra-Air Citrus spray ($4.50 at supermarkets) or all-natural Citrus Magic Air Freshener ($10.50, citrusmagic.com), remove food odors. Often the best (and easiest) remedy is to open a window or turn on a vent. "We use exhaust fans that suck everything out," says Wayne Almquist, a professor at the Culinary Institute of America, in Hyde Park, New York.