Sometimes the problem isn’t your technique—it’s a clogged airflow path. Dust, pocket lint, or dried e-liquid can build up in the mouthpiece or airflow slots, creating a partial vacuum that pulls extra juice into the coil. The device starts to gurgle or taste burnt, and you may blame the coil when it’s just a blocked path.

Check the mouthpiece and air slots regularly. Use a dry cotton swab to clear any debris. If you’re using a refillable device, make sure the tank is seated properly and the O-rings are in place—a cracked or missing O-ring can break the seal and cause leaks. For disposables, if the airflow feels tight and cleaning doesn’t help, it’s likely time to replace the device.