The first time I encountered this, it scared the shit out of me. Only by rationally eliminating possibilities was I able to calmly dig in, learn about the Epley Maneuver, and get some relief.
It still pops up on occasion, but a couple of rounds of the Maneuver and I’m usually back to normal.
I use ChatGPT and Copilot as search engines, particularly for programming concepts or technical documentation. The way I figure, since these AI companies are scraping the internet to train these models, it’s incredibly likely that they’ve picked up some bit of information that Google and DDG won’t surface because SEO.