Spray on Glass, yes spray on glass. There is a liquid breathable glass that they can spray on surfaces. You can spray it on surfaces to keep them new but the big arena is in food. You could spray it on food and then it would keep out bacteria. Veggies wouldn’t mold so you don’t have to worry about spoilage. Due to the fact it is only 100 nanometers thin it is totally edible. Science is amazing isn’t it?