From the Cato Institute:
"It now turns out that the influential 1993 EPA report "Respiratory Health Effects of Passive Smoking: Lung Cancer and Other Disorders" was as phony as a three-dollar bill. State officials and private businesses that believed that ETS was a public health danger (and not just a nuisance) were completely misled by the EPA. And, of course, so was main street American public opinion."
http://www.cato.org/dailys/9-28-98.html
50 smokescreens