When the Lamp is used in accordance with the instructions, the amount of isopropyl alcohol (IPA) released into the air is well within the safe limits for adults, children and pets. The majority of the IPA is burned during the catalytic combustion process which breaks it down into simply water and carbon dioxide, and the remaining IPA that is released into the air diffuses very rapidly.
The OSHA (Occupational Safety and Health Administration) limit for exposure to IPA is an airborne concentration of 400ppm (parts per million). Using a large Fragrance Lamp for the recommended 30 min period, in an average sized room, results in an airborne concentration of IPA around 19ppm, assuming zero airflow. Allowing for normal household conditions with a small airflow, the concentration will be even lower than this.