There was briefly a hot news item that Camilla had been talking at great length about Joe Biden farting. Of course, it immediately brought to mind the famous anecdote about Queen Elizabeth I in the same situation.
But it seemed an odd story, because it would be unlike the Royals - indeed, unlike any civil person - to mock someone for an accidental physical problem, and in this case, it ended up being a bit of a triumph for Biden's enemies.
According to Snopes, it's not even known for sure if it's true.
www.dailymail.co.uk/news/article-10172959/Camilla-stopped-talking-hearing-President-break-wind-chat-Cop26-summit.html