Some people say I sound OCD, but 99% of all other people from what I can tell do not EVEN think about the exhaust (especially at my work where we use large mowing machines & gas/diesel-powered everything). Why is something (fuels & their exhaust) so prevalent around the world allowed to be around the air everyone breathes? So even if it's feasible to hold my breath around exhaust, I am doing anything significant to my lung cancer risk to justify holding it?View Thread
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