Not wanting to make an enemy or anything but CFC's or Chloroflourocarbons are no longer produced and according to internatinal treaty are now banned. Airbrushes run by a compressoer never had CFC's because they used compressed air, but I think you are reffering to ones that use canned air. These, as well as spray cans, no longer use CFC's and now just use compressed air to propel the paint. I can speak only for products produced in or for the US and other members of the United Nations, which unanimously signed the non-cfc treaty.
CFC's were first designed and produced by Dupont, which then patented the design of the chemical. Any other company that produced CFC's did it under license from Dupont. In the mid 90's Dupont withdrew all licenses to produce CFC's and stopped it's own production. This is not to say that it might not be produced illegally, but most of it's production has ceased.
I will agree that a mask is approprite and to work in a well ventilated room, so as not to inhale the paint particles, especially enamel paints. Also, take a break, in between painting, don't do it straight through, break it up into smaller sessions so as to allow the vaporized particles time to settle.
Rob