Not really, no.
I’d be interested to see if any exist though, as I’d often learn things like this when studying. I’d say there’s definitely enough myths and things to write a book, so it’s be interesting to see if there’s one out there.
Two more than come to mind is that people believed the earth was flat and they could sail/fall off. People knew the earth was round for a long time.
And that people died young in the past. Whilst life expectancy was shorter, it was high infant mortality rates that brought the average down significantly opposed to people dying young. With epidemics and certain professions excluded, it was rather common for people to live until their 60-70s, still younger than today, but people weren’t dying at 40 like we seem to believe