"Irritants such as cigarette smoke, dusty homes and human dandruff can increase inflammation in feline lungs and worsen asthma in cats."

http://news.yahoo.com/s/nm/20051019/hl_nm/asthma_cats_dc;_ylt=Al7Pzl7IVVBMLZ1yHNOtLNQR.3QA;_ylu=X3oDMTA3czJjNGZoBHNlYwM3NTE-

Betcha didn't know cats get asthma. smile