JUULpods are built for smooth puffs under normal drawing pressure.
It may take a little extra suction on the first try to get the JUULpod working, but the following puffs should be gentle. Aggressive puffing or using extreme suction can force liquid up into the air path.
It's best to avoid squeezing the mouthpiece between your teeth or lips - this pressure may also force liquid up into the air path and cause leakage.
When inserting your JUULpod, place your fingers on the outer edges of the hard plastic mouthpiece to avoid squeezing the JUULpod as it clicks into place.