We had a FEMA trailer after Hurricane Katrina that was giving off formaldehyde gas inside. We didn’t find out until later, but we were all suffering the same symptoms as the people in this story plus sore throats.
Similar symptoms happened here after hurricane Irene. People with new houses are now suffering with respiratory ailments. My neighbor moved into her brand new “beautiful” prefab house and within 5 months ended in a hospital. I never see her open her windows.