You can try the method I used to use on my car, open up the tower and sit a mug or small bowl of vinegar in the bottom of the case, then close the tower again and leave it in there for a few days. This should disperse the smell, and the remaining faint vinegar smell should fade on it's own.
You can also use the follow up trick of repeating the process with coffee beans after the initial vinegar airing, replaces the vinegar smell with a nicer one that fades faster afterwards.