That's the reason I use chlorine dioxide for a hand, face and general purpose sanitizer. It has long residual effects because it is like a liquidized gas that can last for several hours. Safe on skin, even at relatively high mixtures (I use 20 drops in a 2 ounce mist bottle that I carry around). You can purify a gallon of drinking water with just 3 drops to give you an idea.
Thank you for the information!