Before we see Jimmy smoking, almost at the end of the episode, Kim is working on her computer and she is using a cordless mouse, not generally available in 2003/4. See more
Here's what's gonna happen. One day you're gonna get sick, again. And one of your employees is gonna find you, curled up in that space blanket-take you to the hospital. Hook you up to those machines that beep and whir, and hurt. And this time it will be too much, and you will die there. Alone.