《古今医案按》桂花瘴·全州桂林梧州平乐皆有之.八九月间.香气如桂.此瘴最急.触人口鼻即倒仆.此为中瘴.必须同行之人.就其鼻旁.掘一穴.通地气.亦有得生.但腹痛饱胀.头晕恶心.重者立危.轻者平胃正气散.下玉枢丹而活.有善避者.见有黑气如雾.其香必至.即刳一地穴以身俯地上.口鼻向土潭穴中.勿使香气入穴.即解矣.其气不及一饷.即散.故此地人枵腹行路.必用大蒜烧酒.亦避之之意.或先以行军散搐鼻亦妙.又近云南交址地方.有糯米饭香.即病而绝.俗名江米瘴.亦可类治.