If you throw seeds on concrete, they won't grow. They have to meet fertile soil. So it is with germs. Even if they do get into your body, unless it is nice and acidic, they can't grow and multiply and make you sick - or kill you.
Robert O. YoungWe can heal ourselves by changing the environment inside our bodies. Potentially harmful invaders, then, will have nowhere to grow and will become harmless.
Robert O. Young