Q What do I do in the rare event of a natural gas leak? Posted4 years, 9 months and 13 days ago A Answered4 years, 9 months and 13 days ago Answered byJames O'Bryant Pipeline leaks are rare, but being able to recognize and respond to a suspected leak or rupture is an important part of living and working safely around underground pipelines. Signs of a natural gas pipeline RUPTURE: Loud roaring or explosive sound; OR Very large flames and loud roaring noise Signs of a natural gas pipeline LEAK: Rotten egg odor Dead vegetation over or near the pipeline For more information, please visit INGAA’s Safety page.