What did? Viruses escaping a lab, or a gene-free virus infecting a cell and causing it to make more of that virus?
I don't think the latter has happened. If I really stretch, maybe something could trigger a reactivation of a virus that's burned into your DNA? But that can't give you a new virus, and such a reactivation could happen on its own without help.
Or if you were implying something about the origin of viruses, I disagree and don't think the mechanism we're talking about was part of that story.
Sometimes, fiction is just fiction.