You must be thinking, why there is a need for NOx removal equipment in home, office or factories for nitrous oxide emission? Nitrous oxide is already a laughing gas and helps in sedation in the medical industry. It always contributed to the health and well-being of mankind, then how NOx emission can be a death-factor.
Nitrous oxide is a potent greenhouse gas. It is three hundred and ten times stronger than carbon dioxide. This gas is a major cause of ozone layer depletion and climate change