Table 1.
Major Indoor Environment Factors That Affect Asthma
| Pollutants |
| Particulate matter |
| Nitrogen oxides |
| Secondhand smoke |
| Ozone |
| Allergens |
| Furred pets |
| Cats |
| Dogs |
| Others |
| Dust mites |
| Cockroaches |
| Rodents |
| Mice |
| Rats |
| Molds |
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