Sometimes a device just doesn't perform. If you get a burnt taste, a gurgling sound, or a completely blocked airflow, don't try to fix it by forcing harder puffs. That can worsen the issue or make the device leak. Set it aside and grab a fresh one.

For inventory, you can swap out a faulty unit if you have a return policy, but for most disposables, it's not worth the hassle. Just note it and move on.