The April 2018 Royal Aeronautical Society paper linked to by mickjoebill is very important but it is some thirty-five years late.
The emergency exits in the SSJ-100 SVO incident were woefully inadequate as they are on most narrow body aircraft. The aviation incident was completely survivable. The static killing and maiming by fire and smoke was medieval. Burn through clearly is the killer and it has nothing to do with flying other than the fact that coming back to terra firma too easily dumps you in such a terrible situation. The speed of onset of danger in with an ignited fuel spill means you must be able to get out of the cigar tubes sat in those flames immediately, and it is of course is impossible if you can only use the two front exits and you are in the back. Why do we still tolerate this risk?
The ridiculously simplistic one-time 90 second test was always a finger-in-the-air nonsense, and is now terribly out of date.
Wake up people. Now!