Core Viewpoint - The article discusses the guidelines regarding the consumption of strong-smelling foods, such as instant noodles and durian, in high-speed train carriages to maintain a pleasant travel environment [1][3]. Summary by Sections Guidelines for Passengers - The travel guidelines state that due to the enclosed nature of train carriages, passengers are advised not to consume foods with strong odors, including instant noodles and durian, to ensure a fresh air environment during the journey [2][3]. Customer Service Insights - A representative from the national railway customer service confirmed that regular instant noodles without heating packs can be brought on board, but passengers are encouraged to choose less odorous foods to avoid disturbing others [4]. - It was noted that high-speed trains typically do not sell instant noodles, and the availability may vary based on the specific train service [4]. Public Reactions - Some netizens feel that the guidelines are an overreaction, while others understand the concerns regarding the strong smell of instant noodles [5].