Or that sound travels across water? I assume it’s because usually there are blockages, tree/buildings horizontally, while in high-rises and boats there are nothing blocking sounds
Edit. The myth here is that sound travels across water and upwards more than any other direction. Apologies if it was not worded well
This is fairly common among the less scientifically inclined in my community. Also here is a quora question https://www.quora.com/Why-does-sound-seem-to-travel-upward-more-easily-than-it-does-horizontally#:~:text=Sound can seem to travel,upward and travel greater distances.
I am more concerned about finding out the origin of the myth. I do know that sound travels omnidirectionally
A question on Quora doesn’t make it a common belief. Especially if there’s only 1.