You smoke 4 packs a day and you worry about what the FSC's are doing to your body?
The insides of your lungs must look like a pile of burnt bacon and blackberry jam.
As far as your loss of freedom, you willingly gave your freedom up to the cigarette company long ago when you got addicted to their product.
Stop smoking and start living. There are many sites that can help
American Cancer Society Guide to stop smoking