Go ahead and use it, it's not going to explode your refrigerator. When you are exploding bottles that is because the lid is threaded on and can't come off to let the pressure out.
Your refrigerator door is not screwed shut. If you have a REALLY good door seal the CO2 will build up and then push the door open ever so slightly to vent. Then the door will seal again and you will never be the wiser. It only takes a very small opening for the gas to escape.
In reality though your door probably does not seal very well and the refrigerator will never pressurize in the first place.