brb writing a dystopian fiction where members of the criminal underworld pee in bottles and do... other things... to evade the state. and then there's a sherlock-type investigator who's chasing a character through the sewers, etc.
I've seen similar claims made on the Internet about the U.S. president and the French president, although these ones aren't proven. Macron did refuse a COVID test on his trip to Russia in early 2022 presumably due to concerns about DNA collection.
[0]https://www.parismatch.com/Actu/International/Poutine-malade...
"According to Russian newspaper reports, in the 1940s Stalin's secret police had set up a special department to get its hands on people's faeces.
The ambitious aim: to analyse samples of foreign leaders' stools.
In other words, espionage via excrement."