In some cases, liability is based on negligence: the failure to take proper safety precautions. In other cases, liability is based on product defects. Possible defendants include: Property owners Construction companies Manufactures of appliances and fuel burning products Companies whose employees fail to service, repair, or maintain the appliances and products correctly and safely Anyone who may have responsibility for the maintenance, use, and repair of a product that emits carbon monoxide Delay can hurt your case. If you were harmed by CO poisoning, or someone you loved died from carbon monoxide poisoning, it’s important to see an experienced toxic exposure lawyer as soon as possible. This is because it is critical to determine the source of the CO poisoning. If the source isn’t fixed, others could suffer.