"Disprove" Smith? I embrace him, especially the following from Book Four, Chapter Two (say, isn't that what you claim to have read?):
It is the maxim of every prudent master of a family never to attempt to make at home what it will cost him more to make than to buy. . . .
What is prudence in the conduct of every private family can scarce be folly in that of a great kingdom. If a foreign country can supply us with a commodity cheaper than we ourselves can make it, better buy it of them with some part of the produce of our own industry employed in a way in which we have some advantage.
Good start.
Keep reading. You'll eventually get to the right part.
Oh, crude. You neither embrace nor have read that chapter. Had you read it you would be arguing something quite different. It is more than okay to claim I do not understand what I have read. There is always the chance I may not have understood it. That does happen. But first, you must read the material.
What does Smith say about tariffs?