What to do: Inhale slowly and deeply, the way people do when it's freezing and they want a warm, satisfying hit. Do this on both an adjustable-airflow device set to a tight draw and a pod-style device with a fixed draw.

Success signal: The device that produces a denser, warmer vapor without making you cough is the one that matches a winter vaping style. If the pod-style feels too airy or the adjustable airflow feels harsh when closed down, you know which direction to lean.

Some people love dialing in the perfect draw—it feels intentional. Others just want to puff and go. There's no right answer, but you can spot the difference in how they react during this test.