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?
500,000 eggs would be the equivalent of an 80 year old consuming more than 17 eggs every single day since birth - which I'm sure most would probably see as excessive and not very sensible!
It's a shame there are so many who don't see 20 cigarettes a day in the same light.