Toxic Dust: Contractors, despite our contract instructing them otherwise, have pulverized and aerosolized into our home : plaster, old paint, drywall, quiet rock type drywall, sawdust, and other wood and wood imitation products. I am cleaning copiously with damp cloths, HEPA vaccuum and using HEPA filters from Lowe's, even ran 2 of the AC units without the cold and am avoiding using forced air heat. Is there anything else I can do - my 6 month old and the rest of us are still coughing and feel like the air is causing us to have a choking feeling - basically you can taste the air. We are going to be tested for our lead levels as well.