When you land at your destination, the temperature might be totally different. Maybe you flew from a cold city to a warm one. Your device will feel different. So make it a habit to check the airflow ring before your first post-landing hit. If you opened it fully for the cold, you might want to close it slightly if it’s warmer. If you closed it for a warmer climate, open it up.

This ensures you get the draw you expect, every time. It takes five seconds, and it saves you from a surprisingly harsh hit.