I know a guy who lived just half a mile from that place. Near all fatalities were limited to a a nearby barracks of an army motor rifle brigade, a factory and an office building in that very same neighbourhood. One thing all effected buildings had in common is centralized air conditioning. The laboratory was in a rather densely populated suburb with tracts of homes and apartment buildings, at least two schools and day care center. Noone was hurt apart from people in the buildings I said. So maybe centralized AC is not a good thing.
Oh, that’s just great. Put a few who were down wind of this latest on airplanes bound for major hubs and let the a/c and tight quarters do the job.