WSJ.com - This Job Stinks: Chemists Embark on Quest for Odor
http://online.wsj.com/article/SB122065739354405621...
Chemists+working+for+a+fragrance+company+are+engaged+in+what +they+call+a+%22scent+trek.%22+Their+mission%3A+To+harvest+r eal-life+household+odors%2C+including+smoke%2C+garbage%2C+sw eat+and+mildew%2C+replicate+the+smells+in+the+lab+and+then+f ind+new+ways+to+counteract+them.