Ok....well I understand what you all are saying. That the odds are rare and nobody can truly make the link.
That being said, MANY MANY times, a truck, bus, pick up truck passes by and I end up inhaling the exhaust fumes. That's what he associated his cancer to. Now, maybe he did get it from something else... but heck...those exhaust fumes can't be good for anyone.
This is what he was wearing
http://www.mec.ca/Products/product_d...=1225327910556