You probably won't open a disposable, but you can still do a quick check. Once a week, look at the mouthpiece and airflow holes for lint or gunk. A dry wipe with a tissue does a lot. Also, store the device upright—this keeps the wick in contact with the liquid, instead of letting it dry out on one side.

If you use a device with a visible e-liquid window, check that the liquid level isn't too low. Once it gets near the wick holes, you're more likely to get a dry hit. And if you notice any leaking or a wet, gurgly draw, that's condensation, not a burnt issue—but it can attract dust.

Here's a simple weekly routine:

• Wipe the mouthpiece and airflow holes.
• Store upright, away from direct heat.
• If the device has a window, check the liquid level.