日本大阪府的一份火灾死亡报告中说,火灾中致人死亡的原因,除少数特殊的情况外,主要有以下四种:一、有毒气体.火灾中,一般认为最有毒的气体是一氧化碳.在死者身上,虽然也能检查出氢氟酸以及其他有毒气体,但这些对导致死亡几乎没有直接影响. In a fire death report in Osaka prefecture, Japan, there were four major causes of death in a fire, except for a few special cases: 1. Toxic gas In a fire, the most toxic gas is generally believed to be carbon monoxide. On the deceased, hydrofluoric acid and other toxic gases can be detected, but these have little direct impact on the cause of death.