“Dirty Jobs” host Mike Rowe recently revealed what he considers the single most dangerous job in the world, one he said he would “never do again.” The blue-collar work advocate and popular TV host discussed the topic during a recent podcast episode, saying out of all the disgusting, death-defying job sites he’s explored, one stands out as being particularly treacherous. That came when he was opal mining in Australia. The question posed by podcas…