Have you tried washing the panels? There is no reason to keep them from getting wet. Moisture will not degrade the kevlar, just let it dry out real well. Think about it, doesn't it get wet when you wear it and sweat your gonads off? Doesn't it get wet when you are standing in the rain working a nasty accident? Water is no problem.
Just fill up the bathtub with warm water and a mild detergent, like dishwashing soap. (Lemon joy leaves a nice clean scent
) Rub it down thoroughly with a rag, and lie flat to dry away from the direct sunlight or forced air ducts. Do this at least once a month or so to keep it smelling good.
Check with your manufacturer if you need more suggestions.