In Marvel's Jessica Jones, if Kilgrave says stop, everybody stops because of the viruses in the air. But shouldn't those viruses affect Kilgrave too? How can he move after giving the stop command?
In the TV Show
Unfortunately, we're given very little information regarding the virus which Kilgrave emits.
- It was the result of experimentation
- It requires being in a shared airspace with the victim
- The effects wear off after 12 hours
- The virus has a limited range of effect
We never learn precisely what makes anyone, like Jessica, immune to the virus.
In the comics
In the comics, Kilgrave doesn't emit a virus, he emits pheromones which have similar effects and limitations as the virus in the TV show. However, people with a strong will or radically different physiologies find it possible to resist Kilgraves powers to limited degrees. In the comics, Jessica Jones is immune thanks to a special mental block provided by Jean Grey of the X-Men.
So... that immunity
As lame as it is, this is pretty much just the standard in most comics - most characters are simply immune to their own powers, even when they are destructive. For example, Cyclops and Havok are both immune to their own (and each others) concussive blasts. That said, it's not without precedent in the real world. Animals which secrete venom can often ingest their own deadly venom with little or no negative effect - nature has simply made them immune to their own natural offenses/defenses. It would make sense that Kilgrave's body built itself a natural immunity to whatever the virus is that he emits.
When Kilgrave says "Stop", he wants everyone else to stop. He knows this, so there's no way he can interpret hearing his own voice as commanding himself to stop.
His powers are based on the subject's understanding of the intention and meaning of the words, not from the virus itself directly hearing / understanding the spoken English commands. There's some scope for lawyering his commands (e.g. what exactly did he tell you to do), but not really for completely twisting the meaning. People subject to his powers can't get out of it / around it by purposely misinterpreting what he says.
Since Kilgrave knows he doesn't mean himself, he doesn't have a problem.
It's a little suspicious that the virus makes people susceptible only to Kilgrave's commands, not just to any commands, but this is fantasy so it can work that way if the authors decide it does. So whether the virus affects Kilgrave or not, I don't think it can be a problem for him, because he always knows what he means.