It makes hemoglobin much more likely to bind oxygen. And what that means is, by binding to our hemoglobin Co, carbon monoxide ultimately causes the hemoglobin to not be that likely to release oxygen to the tissues. And so, as a result, the tissues will receive less oxygen. Less oxygen will be delivered to the cells of our tissue. And what this means is when carbon monoxide binds to our hemoglobin, it causes a leftward shift in our hemoglobin curve. And not only that, it also lowers the actual curve.