Proventil HFA- How is the CFC inhaler bad for the environment, it goes into your lungs, not the air???

The issue must be that the gas that escapes from the inhaler leaves through your ears and does more damage than an automobile. It must be considering they took the time to research how a splinter of plastic saving peoples lives is killing the planet while 18 wheelers belch smoke when they're not running people off the interstate. I'm not against either killing the planet or 18 wheelers, I'm actually in favor of both. I wish I could write this answer on a styrofoam cup so people a hundred years from now could see that I don't give a **** about this planet. I'm out, I need to jump in my truck, burn some fossil fuels, and hunt me some endangered species. Polar bear jerky is tasty...