I have a dog that is a people person..she loves people so much taht she jumps all over them.
She is an 80-90 lb black lab, with very hard scratchy paw pads and sharp nails(even when she gets them trimmed

), so she hurts adults, forget about children!
Jazz goes in my room whenever we have adults over and in the crate in my room whenever we have children over(just in case someone opened my bedroom door).
She wouldn't mean to hurt anyone and I am sure she wouldn't do serious harm, but there's no way I am subjecting guests in my home to that.
We leave her out at times when we have "dog" people over the house, my brothers who like dogs, friends who have big dogs themselves and don;t freak out about the jumping, which yes I try to cure her of, but nothing seems to work!