
They've probably already figured out how to root out that nasty "destroy all life" bug. If we humans who haven't even begun to master nanotech can see its possible dangers, so can the Vasari. Getting bit in the ass by it wouldn't drive anyone insane, though it might be slightly surprising at first. The Vasari use nanotechnology all the time.

Whatever the Vasari are running from ain't pretty and is far more dangerous than anything you or I could fathom. Think less Cylons/Geth and more along the lines of Cthulhu and the Elder Gods. Only a single Vasari warship ever survived contact with whatever this enemy is, with the ship's crew was driven made with fear.
