It would seem that there are several answers: 1. to keep the nasal passages moist or 2.(odd one) to prevent the formation of pheromone receptors.
Nasal is the root word of nasal. There is no prefix or suffix.
Nasal-refers to nose on face.
the nasal in the middle of the nose
your nose
Nasal refers to different things relating to the nose. One uses the term mostly for saying that they have nasal congestion (stuffy nose) or in dealing with a persons nasal passages.
Nasal strips work by adhering to the nose and gently lifting the nostrils as the strip attempts to regain its former shape. This lifting opens the nasal cavities more fully, unstopping blockages and allowing air to pass more freely.
There is the root, when the bridge of the nose just starts to peak. The nasal base is the length of the bottom of the nose. The nasal ridge is the length of the cartilage leading down the nose.
Your nostrils are your nasal passage
In the nasal cavity.
When someone says "nasal" it refers to the nose or an area near the nose (e.g., nasal vs. temporal visual field).
"Nasal Bones" Ch.Sh
nasal cavity