In the past, there was an incident where an elementary school pupil suffocated to death when his own vomit blocked his bronchial tube after eating buckwheat noodles served for lunch at school that caused an allergy seizure.
過去に、給食でそば粉を使用した蕎麦を食べた事が原因で発作をおこし、吐瀉物が気管に入って小学生が窒息死した事故があった。