| Please answer the following questions | Percentage (%) | |
| Do you know how people expose to the toxic air pollutants that can pose health risks? (multiple choice) | I don’t know | 4 |
| Breathing contaminated air | 77 | |
| Drinking water contaminated by toxic air pollutants | 8 | |
| Eating contaminated food | 5 | |
| Touching contaminated soil, dust, or water | 12 | |
| Ingesting contaminated soil | 5 | |
| Other | <1 | |
| Do you know that air pollution can cause negative effects on environment, economy, social and health? | Yes | 96 |
| No | 3 | |
| I don’t know | 1 | |
| Do you feel sick or uncomfortable when air quality is bad? | Yes | 85 |
| No | 2 | |
| Feeling is not obvious | 13 | |
| Could you please tell us which human organs can be affected by air pollution? (multiple choice) | Pulmonary | 98 |
| Cardiac | 45 | |
| Vascular | 47 | |
| Neurological | 36 | |
| Other | 3 | |