Caleb Immel, left, 10, son of Clissie Immel, and Lilly Markovitz, 9, both of Sidney, daughter of Benjamin and Christina Markovitz, react after smelling a scratch and sniff piece of paper that smells like the chemical mercaptan in their Christian Academy Schools classroom Friday, Oct 2. The exercise was part of a fourth-grade energy safety education program by Vectren. Mercaptan is added to natural gas which in normally odorless so that people can detect it during a leak. Luke Gronneberg | Sidney Daily News
Caleb Immel, left, 10, son of Clissie Immel, and Lilly Markovitz, 9, both of Sidney, daughter of Benjamin and Christina Markovitz, react after smelling a scratch and sniff piece of paper that smells like the chemical mercaptan in their Christian Academy Schools classroom Friday, Oct 2. The exercise was part of a fourth-grade energy safety education program by Vectren. Mercaptan is added to natural gas which in normally odorless so that people can detect it during a leak. Luke Gronneberg | Sidney Daily News