The next two questions are about things in the air you breathe that may
make you ill, not about illness you can catch from other people, such as a cold
 
Things like dust mold, smoke, and chemicals inside the home or offices can
cause poor indoor air quality. In the past 12 months, have you had an
illness or symptom that you think was caused by something in the air inside
a home, office, or other building?

Response Unweighted Frequency Weighted Percentage Standard Error Lower 95% Confidence
Limit		 Upper 95% Confidence
Limit
Yes 1718 20.3 0.5 19.2 21.3
No 6852 79.7 0.5 78.7 80.8

Among all respondents, excluding unknowns and refusals.