How do oxides of nitrogen (NOx) cause smoke inhalation injury?

Updated: Oct 15, 2021
  • Author: Keith A Lafferty, MD; Chief Editor: Joe Alcock, MD, MS  more...
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Answer

At ground level, NOx are produced during electric or arc welding, combustion of fuels, detonation of nitrate-based explosives, combination of nitrogen-containing products, and decomposition of organic matter. Recently filled farm silos have high nitrogen dioxide levels for approximately 10 days, peaking at 4000 ppm. Significant quantities of nitrogen dioxide also are found in diesel engine exhaust.


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