Some people believe humans have wings or can attain them. Where did that originate and is there any truth to this notion?

This is a fanciful idea that resonates with people with their intuitive awareness that humans are intimately connected with the Divine. So the idea that humans, like the angelics, might truly have wings, or had them, or may gain them, is in keeping with that intuitive understanding but is not a literal truth. It is a comforting and uplifting idea but is not the case. Humans do not have wings, and have not had wings, and will not have wings. This is because wings are not needed for people, and so the idea is a metaphor, and not meant to be taken literally.