It basically erupted. Sounded like a loud explosion, except somehow at first, uh, guttural? I can't really describe it too well. Nevertheless, that hell chemical, if you can call it that, was ejected from it at frightening rates, actively seeking out whoever or whatever was unlucky enough to be too close. The first vector I saw was a researcher, and once he breathed in the fumes? Poor bastard didn't stand a fucking chance!