The airflow ring is often the first thing to wear out. Because it's exposed, it collects lint, dust, and pocket debris. Over time, you might notice it gets stiff or doesn't click into place like it used to.

If your ring sticks, don't force it. Clean around the intake holes with a dry brush or a cotton swab. If it's still stiff, a tiny drop of food-grade lubricant on the ring's track can help, but check your device manual first—some materials react badly to oils.

A stuck ring can accidentally change your draw mid-commute. If you notice your vapor suddenly feels different, check the ring's position. It might have rotated in your pocket.