CFCs were ultimately replaced by propane and butane.
The trade-off being that while propane and butane are natural gases and don't have such a harmful effect on the upper atmosphere, they're much more flammable and explosive. To satisfy safety regulations, most aerosol-filling factories needed to have the cans sealed in a separate annexe - and it had to be designed to fall away from the main building in the event of a structurally compromising explosion.
( The Mock TurtIe ™ --- Thinks you are a cunt, on, Tue 6 Dec 2011, 22:51, Reply)