A meta analysis shows an increased risk of lower respiratory
symptoms/disease in children 5 to 12 years old associated
with exposure estimates of NO₂ levels. Predominant
source of exposure contrast in homes with gas stoves vs.
homes with electric stoves.
In individual indoor studies of infants 2 years of age and
younger, no consistent relationship was found between
estimates of NO2 exposure and the prevalence of respira-
tory symptoms and disease. Statistically. the evidence
date does not support an effect in infants comparable to
that seen in older children.
Elevated prevalence of acute respiratory symptoms
Occurrence of acute respiratory symptoms (cough, chest
pain, dyspnea)
Bronchial pneumonia, bronchitis, and bronchiolitis induced
by exceptionally high NO2 exposure
Extreme exposure health outcomes range from
hypoxemia/transient airway obstruction to death