A report ... I would say a only study ever done so, keep reading ... says that picking your nose is not only socially unacceptable, it's also dangerous in a number of ways and could even greatly increase your risk of contracting COVID 19. It's not only childish and gross, it's invasive. You're basically inserting germs, bacteria, and other nasty stuff directly into your body. Even if you just washed your hands, the second you touch anything else, (for example, whatever you dried them with), you could be picking up bad stuff which you will then transfer to your nose and into your body.