Expert shares possible source of cabin fumes after terrifying midair emergency

Aviation expert Gary Leff weighs in on an American Airlines flight that made an emergency landing in St. Louis after passengers reported strange noises, a sudden jolt and an odor in the cabin.

Gary Leff, aviation expert and founder of the blog "View from the Wing," explains what unusual odors aboard an aircraft could indicate and how flight crews respond to potential mechanical issues after an American Airlines flight made an emergency landing.