i think the fumes would make one light headed and than you would drop the chainsaw cutting off your leg and then you would bleed to death...so yes in a round about way it would.
With all the racket, I can't imagine it would be very stealthy. But if your victim was deaf, and could not detect the vibration of the saw, and could not smell the fumes, or say, "Wow, my eyes are burning." Then it could happen.
[Edited on Dec 03, 2005 10:48PM]