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Hydrogen sulfide is sometimes called knockdown gas. Isocyanates Found in paints and plastics Can cause skin allergies Evaporates and can form toxic gases at temperatures above 160 degrees Was the main substance responsible for over 2,000 deaths following a leak from an industrial plant in Bhopal, India, in 1984 Exposure to isocyanates can cause permanent asthma disease even in people who previously had healthy airways Methyl isocyanate is strongly irritating and corrosive to the eyes, airways, and skin Acute exposure to high concentrations can cause pulmonary edema and damage to the lungs alveoli, severe corneal injury, and death Lead (Pb) Lead is a heavy metal found in various industrial processes, including battery manufacturing, paint production, and plumbing

Int J Environ Res Public Health 2020;17:8191

These features monitor the device and shut it off if it detects prolonged use or unusual activity

They do not replace the need for ventilation and should be used in conjunction with other appropriate health measures