The septum can be a cartilaginous sheet that separates the proper and still left sides of the nose. It is rarely beautifully straight. When the septum bends drastically (this is a deviation), it could possibly block the air passage on 1 or each side, which makes it difficult to breathe. https://juliusdggee.csublogs.com/45310536/considerations-to-know-about-rhinoplasty