What common hazards are present at all clandestine labs?

The presence of flammable atmospheres and toxic gases is a significant hazard at clandestine labs. These facilities are often used for the illegal manufacture of drugs, which typically involves the use of volatile chemicals that can create highly flammable environments. If these chemicals are not handled properly, they can ignite easily, leading to explosions or fires.

Additionally, many of the substances used in clandestine drug production release toxic gases, which can pose severe health risks to anyone in proximity without proper protective equipment. The dangers associated with exposure to these gases can include respiratory issues, chemical burns, or even fatalities in extreme cases.

Thus, understanding the risk of flammable materials and toxic emissions is crucial for safety when responding to or assessing a clandestine lab situation, making this option the correct choice.