We do know enough that keeping your hands disinfected works and objects you touch can work. Any disinfectant that contains at least 70% alcohol will kill Corvid. Just a matter of applying when you should. Just clean your hands after touching questionable places and before you touch your face. It's a hassle, but it has worked for us while being out and about.
Being sanitary and disinfecting helps but it doesn’t change the fact that the virus is airborne.