Season 3 Episode 24

Snow Day

Aired Friday 9:00 PM May 16, 2007 on CBS



  • Trivia

    • Interesting Fact: A moment after the alarm sounds, Peyton asks Mac if it's sulfur they are smelling. Mac attributes the odd smell to a gas leak. Noticing that an open flame does not react to the supposed gas in the air, he takes an air sample and realizes they are smelling Mercaptoethanol. "That's the same smell as the chemical compound they add to odorless natural gas to identify a leak.", he explains to Stella.

      Mercaptoethanol is among one of the strongest odors known - most people can smell less than three parts per billion - and is chemically related (and similar in odor) to skunk spray.

      This and similar compounds do contain sulfur, but have an odor distinct from that of sulfur vapors.