Which part exactly confuses you? If you believe the opposite I challenge you to showcase the scientific poof of any so called viral particles being able to make anyone sick. This hasn't ever been done and all attempts failed miserably, wonder why...
Discussion
no no cool dawg, you just go ahead and don't wash your hands. maybe lick a few elevator buttons and toilet seats while you're at it, I'm sure you'll be fine 👌
Unsanitary conditions and chemical poisoning is still a thing. However so called pathogenic viruses/bacteria is unscientific scam which has never been properly proven.