you can feed your dog in his crate, or designate a "feeding area" with a mat, for example, some feed outside and some feed in the kitchen, up to you to show your dog where he is allowed to eat
and no, i do not wash my dog,s face after she eats, her mouth takes care of any bacteria... she's free to kiss me anytime and nobody has ever gotten sick. (don't you know... dogs love to lick their privates, their dirty feet, the floor etc when you'Re not looking and then they come and kiss you?
THAT is worse, LOL)