Arrived at work this morning and was greeted by one of our software managers asking for some advice... I goes up to our server room and it stinks of rotten eggs, my first thought was batteries. So I ran to my PC to check my suspicions. Goes back upstairs and evacuates the whole floor. We go through the motions of health and safety before calling the fire brigade.... 4 units turn up, two ambulances and the dibble! Resulting in this And this Turns out that a power supply failed causing our backup batteries to cook, that means they released hydrogen sulphide gas. Which is really explosive and extremely toxic. So a few of us that spent time in the room were already suffering from sore eyes and bad throats. Inevitably the ambulances were called for a few of us! Good news is we are all ok