Money is probably the most contaminated thing you come in contact with on a daily basis, just because of the sheer number of people whose hands it goes through every day. It carries virus’s and diseases, and even traces of drugs.
Spain is known to the largest consumer of cocaine in the world, so it’s of little surprise that the money circulating there has high traces of cocaine. On average, Spanish notes contain 155 micrograms of the drug. The cocaine-money exchange, along with the fact that Euro bills are used to snort the stuff, are the main contributing factors. According to a report in the BBC, Spain has over 1 billion notes in circulation, of which an estimated 142 million have been used to snort cocaine.
Apparently, it’s cheap to buy cocaine in Europe (€60 a gram) because of efforts too boost production by Colombian paramilitaries who need money for weapons, and Spain is the main country through which they smuggle the drugs in. In fact, yesterday the Spanish government busted a Venezuelan-registered ship carrying 2.5 tonnes of cocaine and arrested 11 people of which 6 were Spaniards.
U.S. bills come as a close second with the notes containing an average of between 2.9 and 28.8 micrograms; however, in 1996, upto 1,300 micrograms were found on some of the bills.