Without speaking of the dangerous conditions and backbreaking work, I can't imagine enduring that smell every day, although they probably don't notice it any longer. (Yes, I realize they probably have no choice.) A few years ago I was on a volcano called White Island in New Zealand which had pockets of sulphur in it similar to the one pictured, and they reeked. The whole island smelled like rotten eggs. After spending only two hours on the island, I gave off the scent of eau de sulphur for days and eventually had to throw away the clothes I wore on the tour because not even repeated washing couldn't rid them of the stench.