The smaller nostril can become blocked, leading to reduced airflow, difficulty breathing, headaches and a host of other problems.

Can nose shape affect breathing?

In the nose, form and function are intimately linked. A cosmetic change in the structure of the nose can have undesired effects on breathing. At the same time, specific surgical techniques designed to improve nasal breathing can affect appearance -- for better or for worse.

Why are my nostrils so small?

A deviated septum occurs when the thin wall (nasal septum) between your nasal passages is displaced to one side. In many people, the nasal septum is off-center — or deviated — making one nasal passage smaller.