Bard Medi-Aire® Biological Odor Eliminator Refill, Lemon Scented, 8 oz Bottle Bard Medi-Aire® Biological Odor Eliminator is a concentrated unique formula which chemically eliminates odors associated with urine, feces, emesis and necrotic tissue. It is available in three scents - Fresh Air, Lemon and Unscented.