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Watch Out for Helium Helium balloons are very suitable for decoration, and the gas and the balloon itself are very safe. The safety risks associated with helium come from the heavy, high-pressure cylinders that store them. If you fill your balloons with party helium, please store and handle them carefully. Only authorized adults can manage these cylinders. When inflating the balloon, always point the nozzle on the helium cylinder away from you, and double-check that it is firmly seated and fixed upright before starting to use it. Avoid High Temperature Do not leave the balloon in a high temperature environment for a long time. Helium expands at high temperatures, which may cause the balloon to burst! Precautions for Children and Pets Balloons may cause more suffocation deaths. In addition to suffocating or inhaling broken balloon fragments, some children actually inhale uninflated balloons when trying to inflate. Also, uninflated or burst balloons may present a suffocation hazard...