Hi, we're taking puppy obedience classes and we're on week 2. Hina is pretty good on walks with the help of her training collar. I'm conflicted with how I should walk with her outside of class. We're told to keep our leash at our belly button and keep her at attention by my left leg. However, when we're walking, she does like to stop briefly to smell and explore. Should I let her do this? or continue walking even if she wants to sniff and pick up another dog's scent?