Easily, through semen, vaginal fluids or even for those virgins in the back - it is even more simple than that, in fact those respiratory droplets you may have heard about but never seen... It needs to be understood most are delivered through a minute mist of vapors which can and do land on hands and or surfaces and when and wherever people gather and breathe or talk but especially if they cough. It's actually one of the biggest reasons so many people became infected with COVID-19 while thinking they were being safe. The simplicity of just touching ones hands to objects or surfaces where droplets may have fallen, and then maybe rubbing their eyes, or touching their nose or mouth. For those thinking less than six inches is bad, less than six feet has been known to kill... Stay safe out there.