I am not going to rate the episode. I cannot do this. But I am chemist, and I do know the effects of benzene. Sure it is hazardous, but on this episode it feels like we are in Chernobil!! In no way this is plausible. My suspension of belief did not work, and I could not stop laughing with the non-sense here. Which was too bad... Carter has a good here. But guys, benzene vapours are too volatile to even make it up to the ambulance. At the hospital, they were gone, no benzene left to contaminate anything. It is impossible with the laws of physics. Details about benzene can be found easily. I was exposed several times to benzene, and in petrol stations everyone is exposed anyway. This is not radioactive contamination or antrax: it is just a solvent that evaporates very fast.