Maybe when you are old enough to take a biology class you will understand. Until then do some research. With the internet you can actually LEARN NEW THINGS. Soon you will be smarter than the drones on Fox news! If you still don't believe me talk to a surgeon and ask why they wear masks while operating. They found out over 100 years ago that not spraying bacteria into open wounds vastly improves survival. Same principles hold true for viruses. You're welcome!