Carbon monoxide (CO) poisoning is one of the major dangers of an unsafe gas equipment; even small quantities of the gasoline could cause poisoning. http://nguyenkhuyen-nuithanh.edu.vn/index.php?language=vi&nv=news&nvvithemever=d&nv_redirect=aHR0cHM6Ly93aWtpbWFwaWEub3JnL2V4dGVybmFsX2xpbms/dXJsPWh0dHBzOi8vaG9sYm9ybnBsdW1iaW5nLmNvLnVr