No Emphysema can be caused by other things and old age is one of them, another thing is certain moulds growing in damp walls can cause it as well as whatever chemicals were in your workplace.
The fact is 500,000 cigarettes haven't killed him, if you ate
say 500,000 eggs it probably would?
Old age increases your chances of getting most things, but old age on its own will not cause emphysema. 500,000 eggs, eaten over a lifetime are very unlikely to kill you. As has been pointed out, Briers blames nothing but smoking for his illness. You are clutching at straws here. Are you a smoker, by any chance?