I have some friends who live near this industrial area - steel mill type of industrial. You could take me there blindfolded and I'd know where I am. The mills produce this distinctive aroma - OK, smell. OK, stink. All day long you can smell this sulfur-like, rotten eggs type of odor. When you go there for the first time, you sniff and say, "What's that?" Funniest thing - the people who live there answer, "What's what?" They have lived around that stench so long that it doesn't even register anymore. It's gross - but they've gotten used to gross.