Children are especially vulnerable to air pollution. Children breathe faster than adults, so they are exposed to more air pollution than adults. They exercise more and spend more time outside than adults, which means that they breathe more outdoor air pollution. Children’s lungs are still developing, and developing lungs are more sensitive to pollution than fully formed lungs.
And the elderly are vulnerable too. As people age, their bodies are less able to compensate for the effects of pollution. The elderly are more likely to have other diseases and conditions, such as heart disease or emphysema, that can be aggravated by air pollution