A United Airlines flight from Houston to Seattle had to make an unexpected detour after a dog defecated in the aisle near the first-class bathroom. This apparently caused a stench so foul that it permeated the entire cabin. The incident, documented by a passenger on Reddit, resulted in the flight being diverted to Dallas Fort Worth International Airport where the ground crew spent over two hours attempting to clean the carpet with paper towels, noting the smell made them physically sick. However, despite efforts by the ground crew, the smell lingered, and the first-class lavatory remained unusable. United Airlines confirmed in an email that the incident happened, but declined to share any other details.