If you're traveling through Chicago O’Hare International Airport Smoking Areas and need a place to smoke, it's important to know the airport's current policy before you arrive. Smoking is not allowed inside the terminals, including restrooms, restaurants, lounges, and gate areas. Travelers who wish to smoke must exit the terminal and use the designated outdoor smoking locations before passing through security. If you're already airside, you will need to leave the secure area and complete the security screening process again before returning to your departure gate. Planning ahead can help make your trip smoother and avoid unnecessary delays.