Final answer:
Using thermal fogging with petroleum-based deodorizers in confined areas can lead to the release of toxic pollutants, increase fire and explosion risks, and create higher levels of carbon monoxide, all of which pose safety hazards.
Step-by-step explanation:
Thermal fogging of petroleum-based deodorizers excessively in confined areas can create several safety hazards. One major concern is the potential release of toxic pollutants such as volatile organic compounds (VOCs) and formaldehyde, which can irritate the eyes, nose, throat, and cause serious health effects including damage to the liver, kidneys, and central nervous system, and some can even cause cancer. Additionally, the risk of fire and explosions is heightened due to the flammable nature of these deodorizers, and the possibility of creating a dangerous environment with elevated levels of carbon monoxide (CO), a toxic gas that can be particularly harmful when indoor ventilation is poor.