江城铁路机务段青工小李的家中最近发生了一件怪事,首先是他的妻子小陈得了胃病,厌食、呕吐、呃逆（嗝）、反酸、食后饱胀,甚至有疼痛等症状。没过一周,小李也病了,其症状和妻子十分相似。更奇怪的是,他们7岁的独生女儿两天前也得了和父母相似的病,一吃东西就喊肚子痛。小李心想:胃病为什么会在我家传开了呢? Recently, there was a strange incident in the hometown of young worker Li Gang at the Jiangcheng Railway Depot. First, his wife, Chen, had symptoms of stomach problems, anorexia, vomiting, hiccups, acid reflux, fullness after eating, and even pain. Not a week later, Li is also sick, the symptoms are very similar to his wife. What’s even weird is that their 7-year-old only daughter got a similar illness to their parents two days ago and called for a stomach ache. Little Li thought: Why stomach gas spread in my house yet?