Experimental studies on nasal sensation of airflow.

Objective and subjective measurements of nasal airflow were made before and after inhalation of vanilla and a commercial mixture of aromatics used to treat nasal stuffiness. These substances had no effect on nasal resistance to airflow but caused significant changes in the subjective sensation of nasal airflow. The use of a visual numerical scale for the assessment of nasal sensation of airflow is discussed in terms of its significance as regards quantifying changes in nasal sensation of airflow before and after nasal surgery.