The story has been all the news media within the last week that Lumber Liquidators have sold laminate flooring made in China and that it can cause cancers of the nose and eyes, 2-9 cases every 100,000 people. What is formaldehyde you ask? It is a colorless gas with a pungent smell. it is used in household products and in building materials. Why is it harmful? Formaldehyde is a known carcinogen. It is one of the most common indoor air pollutants.