Disposable diapers
Acute respiratory effects of diaper emissions.
by Rosalind Anderson and Julius Anderson
Archives of Environmental Health 1999  Vol 54 pages 353-358.

Under carefully controlled laboratory conditions, 
groups of mice breathed air which had blown over three 
brands of disposable diapers.
Measurements of breathing patterns showed various 
combinations of irritation of eyes, nose, and throat;
irritation of lungs; and decreased airflow 
as in an asthmatic attack. Mice exposed to air blown over 
cloth diapers did not show these problems. 

The results demonstrate that some types of 
disposable diapers emit mixtures of chemicals that are toxic 
(poisonous) to the respiratory tract. Disposable diapers 
should be considered as one of the factors that might cause 
or exacerbate asthmatic conditions.  Human surveys will be 
needed to determine how important this problem is to infants 
and asthmatic mothers.