Piedmont Natural Gas is reminding customers if they smell natural gas, get out fast! An odorant called mercaptan is injected into natural gas, giving it a smell like rotten eggs so it is easy to detect. Video: Learn how mercaptan works.CHARLOTTE, N.C., Nov. 13, 2024 /PRNewswire/ -- With more homes and businesses using natural gas for heat during the fall and winter months, Piedmont Natural Gas is encouraging customers and communities to learn the signs of a natural gas leak."Natural gas leaks can be manage ...