The Backstory: Eeww! What’s That Smell??

Before the world was industrialized less than 200 years ago . . it smelled really different! They didn’t have to deal with the smell of gasoline fumes, burning rubber or oil, or the output of giant smokey factories. But imagine 3 1/2 million pounds of manure dumped onto the streets of New York City every day! Were they nose blind?See omnystudio.com/listener for privacy information.