Two more items can be just as risky. First, alcoholic drinks. If sealed and left in the freezer, pressure can build until the container bursts—sometimes even sparking fires due to the alcohol’s flammability. Second, dry ice.
Made of solid CO2, it can expand up to 800 times in size when it warms. If kept in a closed freezer, this can lead to a dangerous explosion. These examples show how one simple mistake could put your family, and your home, at serious risk.