Formaldehyde may be released from materials used in renovations.
Formaldehyde may cause cancer,especially kids.
This reports stated that
in PRC,50% of new cancer patients are kids.The most alarming news is that according to 2 surveys done by hospitals in Beijng and ShenZhen, 90% of cancers kids' home were renovated in the past 6 months!!--http://hk.news.yahoo.com/070531/12/28kjk.html