The passage of air to and over the coil, through the chamber, up the drip tip. Tightness of draw and (in part) vapor production and flavor are determined by it.

Does the airflow a vape trick?

The airflow's job is simple, to allow air to freely flow from the coils to your mouth. Most devices have an adjustment ring on the tank that allows you to change the airflow manually – high and low. The higher the airflow the cooler the vape