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Exclamation Icon Leaks, Odor or Emergencies 888.Nicor4U (642.6748)
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Smell Gas?

  • LOOK for blowing dirt, discolored vegetation or continued bubbling in standing water.
  • LISTEN for a hissing or roaring noise near a natural gas appliance or line.
  • SMELL for the distinctive, rotten-egg odor associated with natural gas. Natural gas is colorless and odorless, so we add a chemical odorant called mercaptan for easy detection. This odorant has a distinctive “rotten egg” type odor. You should act any time you detect even a small amount of this odor in the air.

NG leaks odors emergency

Act Fast!

  • LEAVE the area immediately and move a safe distance away from the potential leak, while avoiding any action that may cause sparks. Do not try to identify the source or to stop the leak yourself.
  • AVOID using any sources of ignition, such as cell phones, cigarettes, matches, flashlights, electronic devices, motorized vehicles, light switches or landlines, as natural gas can ignite from a spark, possibly causing a fire or explosion. Natural gas is non-toxic, lighter than air and displaces oxygen. In severe cases, if not used properly, natural gas can also lead to asphyxiation.
  • CALL Nicor Gas at 888.Nicor4U (642.6748) or 911 once you are out of the area of the suspected leak and in a safe place. Stay away until Nicor Gas or emergency personnel indicate it is safe to return.

Note: Do not solely rely on sense of smell. Be aware that some individuals may not be able to detect the odorant because they have a diminished sense of smell, olfactory fatigue or because the odor is being masked by other odors in the area. Certain conditions may cause the odorant to diminish so that it is not detectable. Some gas lines, due to their unique function, may not have odor at all.

Pipeline Safety

We’re committed to maintaining a safe and reliable natural gas pipeline infrastructure. Learn More

Dial 811 Before You Dig

There are utility lines buried in your yard. That’s why the law requires you to call 811 before you dig so the underground lines can be located and clearly marked. Learn More