Well, that's a nice scam.

http://www.snopes.com/business/money/cocaine.asp
http://en.wikipedia.org/wiki/Contaminated_currency

>The other article I've read involved police telling people who were asking about paying bail for friends, relatives, etc that they could only pay in cash, then getting the drug dogs to sniff the cash. Since something like 80% of all US paper currency has been contaminated by drugs, the dogs react and the police confiscate it as 'drug money' - which they get to keep anywhere from 50-80% of it.
>
>>I've seen a least a dozen articles online and at least 1/2 that number of T.V. news stories talking about this happening to people. There is one play (in KY if I remember correctly) where the cops like to pull over semi-truck drivers and steal all their money since they tend to carry a fair amount of cash sometimes.
>>
>>>This seems to be a new trend going on in various states. I was reading about another case (or cases), and of course I can't find the article now.
>>>
>>>
>>>>http://www.newschannel5.com/story/18241221/man-loses-22000-in-new-policing-for-profit-case