[Levi doesn't know what "it" is either, but something has to be causing this. Right? He really doesn't want to be going crazy.]

A visons of a...of another world, another life. It...it's like...me but not me? I-i dunno.

I don't have any idea what or how they'd do that. Maybe the gassed the whole town? Or the water supply or something.
Or...or it's real? I-i don't fucking know man.