Operating in areas where a condensate has escaped is dangerous for people due to the danger of explosions, oxygen displacement and the threat of asphyxiating and anesthetizing.
If enough of the agent enters the bloodstream, usually through lungs or skin, it will cause cramping of the diaphragm, which locks the lungs in place, and the victim will asphyxiate.
We might now ask you if you’d prefer an agonizing quick death such as being burned, or crushed, or would you rather slowly starve to death or asphyxiated in a tomb?
The core of the crowd will get compacted down, individuals will no longer have the ability to move freely, and an unlucky few will get asphyxiated—they quite literally will get crushed so hard that they're unable to adequately breathe.