Pecunia non olet is a famous Latin saying:
Pecunia non olet ("money does not stink") is a Latin saying. The phrase is ascribed to the Roman emperor Vespasian (ruled AD 69–79).
The phrase is still used today to say that the value of money is not tainted by its origins.
Is there an English version of this saying or is it used in Latin also by English speaking people? I could not find any apart from its literal translation, which I suppose, is not commonly used.
Best Answer
The origin of the saying was about a tax on urine.
My answer offers evidence that there may not be an equivalent saying in English today. The closest phrase is probably Hold your nose and take the money, which is explained below.
Some sources of money do stink, in the eyes of the law and in the opinions of many people. This does not necessarily mean that people will not take dirty or smelly money, just that they will rationalize their actions.
The United States Supreme Court recently overturned the conviction of an ex-governor, but used the word "tawdry" to describe his actions in accepting gifts from a constituent. Even legal money can smell.
We have the phrases dirty money and money laundering. This article quotes the Unted States Treasury Department:
Money laundering is a crime.
Addressing specifically the question of smell:
From the Birmingham Mail, April 10, 2010
The article does not say if the Girl Guides took the money.
Finally, from the OP's own source:
This aesthetic will become more widespread as people pay more and more with credit cards or by intelligent phones, which will also facilitate the tracking of money. Large bills may be outlawed in the near future because they facilitate criminal transactions. (It's time to kill the $100 bill)
To reiterate, I am showing that the answer to the OP's question may be: there isn't an equivalent English phrase -- at least not one in good odor.