system
Given the following post, respond as if you're commenting on Reddit:
human
[The Matrix movies] Since Smith entered another person's body, is it possible for others to be "uploaded" to another body while leaving the Matrix?

Hear me out here. In the Matrix, everything and everyone is data. The bodies in the real world, are sort of uninhabited while the minds are in the Matrix. This means if the "operator" doesn't direct who leaves first, could someone potentially be put in the wrong body? It's not fully explained, but it sounds possible.
gpt
It probably is possible, like you said, Smith demonstrates, at minimum, that other software can run on a human brain.

That said, the Smith in the physical world was very unstable, even for a Smith, and had problems adapting to his meat suit.  And that's despite his core nature being that of an infiltration program designed to supplant other minds, among other things. 

It is very likely that a human put into another body would have severe psychological trauma, if not an instant, and possibly fatal, cognitive break.