This movie is really bad, I mean really, really bad. You can see the microphone on a character in one scene, you the budget for the special effects was an after thought, and the acting from a few minor characters is atrociously bad. There are a few scenes that don't fit into American culture, such as a girl committing suicide straight up Japanese Kamikaze style, and a doctor going wacko when he is otherwise sane and logical.
However, I watched this knowing it was going to be bad and it was enjoyable. Danny Glover delivers a convincing enough job, Masuka from Dexter as his sidekick makes me think some real science is going on. The story becomes rather silly and the action and suspense becomes more comical than scary, and then it becomes a rather enjoyable B movie, with a dialogue going on between me and my family watching it, guessing which ridiculous thing would happen next.
I think the producers knew this would happen to some extent, what with the toxin looking like a beehive pollen floating in midair, and the gas tank to a Tahoe being able to open with no breaking and entering tools.
Overall a solid cast, and if you're in the mood for a light and digestible film, watch this. It reminds me of something they would show on cable called "Dinner and a movie" in the late 90's, where they would show OK horror or thriller movies, along with commentary.