In an incident reported, while replacing pipes under a scrubber tank in a pharma company, five persons became unconscious due to possible exposure to sodium bromide and hydrogen chloride gas from the tank. Person on rounds found the persons on the ground. Three were dead and two others are in serious condition.
http://indianexpress.com/article/cities/ahmedabad/gujarat-gas-leak-kills-3-workers-at-ankleshwar-pharmaceutical-factory-two-critical/