This is because you leave puddles of memory when you walk—as our individual scent is a consequence of the unique nature of our complex memory structure. That is why a dog is able to trace it down. So if with just a few moments of your contact with the ground you are leaving puddles of memory for a creature like a dog to pick up, imagine how much memory you are leaving behind throughout the span of your life? How much memory do you think the clothes that you wore, the places you sat on, the places you slept on, the objects that you were in touch with and such other things carry?
