“DMT is one of the most potent entheogens known to man, and the trip it induces is significantly different than other psychoactive substances. Users describe being transported to a distant realm where they meet seemingly autonomous entities, and often those same entities appear to different people. Now, researchers are attempting to catalog these experiences to figure out just what, or who, those DMT entities are.”
—gaia dot com
Of course, these entities are the same ones that SETI is looking for, in the Biblical worldview. The ones they will eventually find, if they ever find any, will also be these ones that appear to people who smoke DMT.