That video doesn't cover aerial contamination. The kind it shows is just hand-to-hand, then hand-to-face. Don't touch your face, and the germs stay on the outsi

That video doesn't cover aerial contamination. The kind it shows is just hand-to-hand, then hand-to-face. Don't touch your face, and the germs stay on the outside of your hands, far from your mucus membranes. I've had very good results from this.