does nose morphology affect infection susceptibility? it should somewhat, right? for instance ace2 expression seems to decrease the further down the respiratory tract we go. so if the nasal cavity is bigger there is more surface area with binding receptors for infection. also i'm guessing maybe internal structure may would effect airflow which may have some effects too. so what is the optimal nose morphology for disease resistance. can we simulate this in ansys fluent or something? could this in part explain the differences in infection rates between the so-called races?