Something smells funny

Yes, this Daily News article itself is interesting, particularly because I'm in Grand Central Terminal an average of two or three days a week, but if you're looking for a story with an easy, Leno-like punchline, here you go.

Need a preview? Here's the opening paragraph:

The Federal Department of Homeland Security released gas in Grand Central Terminal last month in a secret study of how dangerous chemicals might flow through the landmark in a terrorist attack.

Insert jokes here. Or, preferably, in the Comments section of this posting.