An unexpected rivalry has emerged among the First Ladies of the world, as U.S. First Lady Jill Biden and Queen Camilla of England reportedly harbor a bitter disdain for one another. Informed insiders suggest that the tension boils down to an unusual incident involving a fart.

Jill Biden was noticeably absent during President Joe Biden's recent formal visit to Windsor Castle, where he met newly crowned King Charles to discuss climate change initiatives. An insider claims this absence might have been a welcome respite for Jill, as she and Queen Camilla reportedly harbor a mutual dislike for one another.

"Jill was fortunate to avoid an uncomfortable confrontation with Camilla," the source shares.

Though the reason for their enmity might seem trivial to some, those familiar with the situation insist that it has led to a genuine discord between the two influential women. Jill Biden, 72, purportedly regards Camilla, 76, as an "old cow", while Queen Camilla finds Biden to be "snippy and unremarkable."

The crux of their dispute traces back to an infamous incident at the COP26 climate talks in Glasgow, where Joe Biden inadvertently passed wind in front of Camilla. The Queen has been unrelenting in her remarks about the incident, referring to it as Joe's "emission problem."

"Joe's bodily function seems to have left a lasting impact on the queen. She frequently recalls the incident in social gatherings. Despite it being an unintentional and fairly common occurrence, the incident has become a persistent embarrassment for the president," the insider discloses.

The First Ladies' feud has escalated, with Jill retaliating by pointing out that Camilla herself is known for similar indiscretions. Tom Parker Bowles, Camilla's son from her first marriage, has publicly acknowledged his mother's tendency to have flatulence issues at public events.

"The ladies' rivalry over this minor matter has soured their relationship to a disturbing level. Their mutual disdain is palpable," says the insider.

The insider further claims that Camilla perceives anti-British sentiments from the Bidens due to Joe's Irish heritage, further fueling the hostility. Additionally, Jill is allegedly irked by Camilla's mockery of her using the title "doctor," given her doctorate in education.

The First Lady attended Charles and Camilla's coronation alone in May, as it's not customary for U.S. Presidents to attend coronations. "Jill is dreading a state visit invitation where she'd have to put on a friendly facade with Camilla for the cameras," concludes the source.