It's nice to see they recorded the denomination of each bill. Too bad the article didn't go into further detail in its summarization. The abstract[0] says $1 a

It's nice to see they recorded the denomination of each bill. Too bad the article didn't go into further detail in its summarization. The abstract[0] says $1 and $100 denominations were less likely to test positive. The latter is curious. Perhaps it's because lower denominations are more likely to be used by street dealers, or that $20 bills make up the majority of triple-digit ATM transactions. It's worth noting that currency has a lot more than just trace amounts of cocaine on it.[1] Trace amounts of any common narcotic can create problems if probable cause with fur happens to get a whiff of your cash. >There is cocaine dust around the machines. These bank tellers breathe in cocaine. Here I thought handling large amounts of cash was just intrinsically exhilarating. [0] http://www.ncbi.nlm.nih.gov/pubmed/18646272 http://www.ncbi.nlm.nih.gov/pubmed/18646272 [1] https://en.m.wikipedia.org/wiki/Contaminated_currency#In_the_United_States https://en.m.wikipedia.org/wiki/Contaminated_currency#In_the...