Chlorofluorocarbon (CFCs)

Parents

1975 Johnson was one of the first business leaders to recognize the danger to the Earth's ozone layer from chlorofluorocarbons (CFCs), a then-popular propellant in aerosol products, voluntarily banning the substance from all of S.C. Johnson's products.
1994 In 1994, the institute published a paper by its then chairman, Frederick Seitz, titled Global warming and ozone hole controversies: A challenge to scientific judgment. Seitz questioned the view that CFCs "are the greatest threat to the ozone layer".[8] In the same paper, commenting on the dangers of secondary inhalation of tobacco smoke, he concluded "there is no good scientific evidence that passive inhalation is truly dangerous under normal circumstances."[9]
Freon