Do you have a source? I googled it and this site said that Mythbusters found the opposite - https://www.theplumbingauthority.com/blog/2019/february/mythbusters-plumbing-edition/#:~:text=%234 You should close your toilet lid before flushing&text=Mythbusters did an episode about,your bathroom%2C including your toothbrush.
Here’s the best I could find- Trump’s former Defense Secretary Mark Esper claimed in his book “A Sacred Oath” that Trump raised the idea of launching missiles into Mexico to combat drug cartels and proposed doing it covertly to avoid blame. Trump, when asked about this, did not deny the claim but instead chose to say "No comment" - https://www.independent.co.uk/news/world/americas/us-politics/trump-esper-bomb-mexico-drug-labs-deny-b2074547.html