I have a feeling this is like telling people "don't touch a live wire" and the more direct experiental "I won't touch a live wire again" lesson: People need to experience being hallucinated at, within their comprehension, and at best can be told about Gell-Mann Amnesia.

I doubt you can stop them from asking machines for answers. What you can do is aide them to learn how to distrust the answers competently, but outside their field of knowledge, applying skepticism is hard.

The irony of Gell-Mann Amnesia is that Michael Chrichton, who is said to have named it, suffered from it badly: Wrote well within his field, misapplied sciences to write well outside it, and said things which were indefensible.