Not trying to be a wise-guy here... legit question.

So we're not supposed to touch our faces as a precaution. Is that because we could have the virus on...say... our cheeks...forehead... eyes... nose etc. and then transfer the infection to our hands and ultimately into our mouths?

So let's say I DON'T touch my face....but have the virus somewhere up there. Won't it find a way into my system via some other route... say subcutaneously?

Thanks in advance.