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A natural gas odor was reported all across Charlotte Thursday morning, with residents in NoDa, Uptown and South End all complaining about a rotten eggs smell.
Shortly after 11 a.m., Piedmont Natural Gas confirmed the smell wasn't a gas leak, but a leak of the smell additive mercaptan. Mercaptan is a pungent gas that is added to natural gas to give it an odor so it's easier to detect in the case of a leak. Piedmont Natural Gas said the widespread odor stemmed from the destruction of mercaptan tanks by a company in Charlotte. No further information was provided regarding the destruction of the tanks.
Charlotte city officials received so many 911 calls Thursday that an emergency alert was issued to cellphones in the area advising people to not report the smell.
Chief meteorologist Brad Panovich confirmed the odor was exaggerated by a weather event called an inversion, which is when a layer of warm, dense air traps everything underneath it, including pollution, smoke, fog, and smell. That would also include natural gas, which is lighter than air and is naturally odorless.
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