MEMPHIS, Tenn. -- Residents in Collierville, Tennessee, and Olive Branch, Mississippi reported strong gas smells in their areas on Wednesday morning, according to the cities. Some residents in the Forest Hill subdivision in Olive Branch said the heat output in their homes Wednesday morning was very low. The problem is similar to one WREG reported on around the same time in January 2024. At that time Atmos Energy and Olive Branch Public Works asked customers to use their gas lines conservatively as they try to heat their homes. The issue Wednesday morning also impacted nearby Center Hill Elementary School. Center Hill's principal notified parents and guardians about the unexpected heating issue, stating in part, "School officials worked with The City of Olive Branch and discovered low gas pressure as the determining factor. After a temporary delay, gas pressure was restored. Center Hill Elementary's heat has been fully restored, and we will continue with regularly scheduled school activities." The City of Olive Branch said the issue was related to the extreme low temperatrures in the area and was fixed in a matter of hours. "Extreme low temperatures in our area reached into the single digits this morning and we experienced a drop in natural gas pressure due to very high customer demand. We were able to increase the pressures throughout the system, and within a couple of hours we saw these pressures rise and return to normal," Olive Branch officials said. Collierville Fire and Rescue said the reports of a gas odor were coming from various locations in the city and Memphis Light, Gas, and Water is investigating the source of the odor. The City of Olive Branch said the Public Works Gas Department received reports of a gas odor across the city and beyond. They are also investigating the source of the odor in the area. MLGW released a statement saying it was likely due to a tanker truck. "After investigating the issue, we believe that complaints generated in Collierville are part of a larger complaint zone that extends into north Mississippi. It is likely coming from a tanker truck of mercaptan that is traveling along I-385, I-269, and I-55. Mercaptan is the additive we use to help alert people to gas leaks." MLGW says that there is no danger or cause for alarm. The chemical odorant is what MLGW adds to natural gas to give it the rotten egg/sulfur smell so that it can be easily detected.