Audio problem: While talking about Tina Greer's suicide after Chloe says "lit a match" you can hear Pete say "okay" but you see his mouth doesn't move with the word.
Audio problem: When Whitney is tearing up the bathroom, he throws the door and we don't hear it land. I saw this on the DVD, so it was not a transmission problem.
Answer: The kryptonite only creates mutations when it reacts with the environment and an individual. Remember, the FDA and several environmental groups did check out Smallville after the meteor shower, but found no danger in the rocks. Obviously they're not always emitting mutating rays, or all the flora and fauna of the surrounding area would be horribly mutated.
Phoenix