because they are above the health base standards the state has set. >> they were backed by short sellers, a group of wall street investors who are betting the company is overvalued who sued them. drewry has launched a class-action lawsuit against the company. it is approval to have some formaldehyde. this footage was recorded by investigators hired by 60 minutes. formaldehyde is in the glues used for the glue. the top keeps the formaldehyde trapped inside but formaldehyde does leak into the air. how much is inhaled by homeowners depends on how much is in the glue and how much ventilation is in the home. >> you are in a chamber and you are in there and living and