There are a few smoking lounges scattered throughout the airport, but they're mostly located outside the security checkpoints. This means you'll need to exit the secure area and then re-enter before your flight. It's a bit of a hassle, but hey, at least you can get your smoke on!
One of the most popular smoking spots is located near the Domestic Terminal, outside the North Terminal entrance. Just look for the big sign that says "Smoking Area" and follow the crowd. You can't miss it!
Another smoking lounge can be found near the International Terminal, outside the South Terminal entrance. This one's a bit trickier to find, but just ask one of the friendly airport staff and they'll point you in the right direction.