China did that early on ...
All Chinese banks must now literally launder their cash, disinfecting it with ultraviolet light and high temperatures, then storing it for seven to 14 days before releasing it to customers, said the central Chinese government
Cash that comes from high-risk infection areas, like hospitals and wet markets, will be "specially treated" and sent back to the central bank instead of being recirculated.
And in the central bank's Guangzhou branch, these high-risk banknotes may be destroyed instead of merely disinfected, according to
state-run tabloid Global Times.
To make up for the supply, the bank will issue large amounts of new, uninfected cash; in January, the bank allocated 4 billion yuan (about $573.5 million) in new banknotes to Wuhan, the Chinese city where the outbreak began, said the government press release.
China is literally laundering its money to contain the coronavirus - CNN