So thank you, nose hairs. We're now entering the nasal cavity. It's pretty wet because the nose is lined with mucus to keep it moist. And its mucous membranes also warm incoming air. Ahh.

Crucially, this nasal anatomy only reaches its ... which they make with their nose rather than their mouth. “The shape of the nasal cavity allows it to work like an echo chamber,” she says.

For one, the nasal cavity possesses a dense vascular network ... The proximity of the nose to the brain also leads to a more rapid equilibration between the blood and the cerebrospinal fluid ...