Have you never smelled new money? The paper and ink have a scent. And, perhaps, just as they use a unique paper and ink formulated specifucally for security, they may also incorporate a specific scent. read more
Dogs can be trained to alert on pretty much any scent. However, even a dog trained on narcotics can alert on money. Most American currency will have some kind of drug residue on it just because it has been passed from so many people. read more
Dogs to help sniff out crime cash Sniffer dogs are to be used on trains for the first time as part of a major new crackdown on money laundering and other cash-based crimes. Customs and Excise and police are joining forces in a bid to seize the vast proceeds of criminal activity being brought into London from other parts of the UK. read more
In addition to sensitivity, a dog's sense of smell is picky. It can discern a specific scent even when there are dozens of other scents around. Drug smugglers have tried to fool drug-sniffing dogs by wrapping drugs in towels soaked with perfume, but the dogs find the drugs anyway. read more