Terry Tamminen suggests that if humans get injured by fighting roosters, it follows that trace amounts of CO2 are dangerous?

Terry Tamminen Blog: Tamminen: Congress Moving Backward On Green Front - CNBC

A few weeks ago in Lamont, California, a fighting rooster killed a man, when the bird slashed him with the blades he had attached to its legs. A bizarre one-time oddity? No, just days earlier a man in India was also killed when his fighting rooster slashed his throat. Just what is Mother Nature trying to say?