Foul fumes in South Jersey have been contained and identified, officials say

Officials have cracked the code on what was stinking up southern New Jersey this week: a truck that was releasing chemical fumes.

According to New Jersey officials, the foul smell has been reported across several counties before being identified on Wednesday.

A tanker truck at a truck stop was releasing a chemical that caused the stench around Paulsboro, Gloucester County, officials said.

Gloucester County Emergency Management issued a shelter-in-place around 11:30 p.m. on Wednesday for East Greenwich, Paulsboro, Gibbstown and areas across the Delaware River after the fumes worsened. The issue was lifted approximately two hours later.

"It's doing exactly what it should do. When the temperature rises to a certain level, the vessel itself will actually expel fumes. So it's built to do that," East Greenwich Township Police Chief Matthew Brenner said on Wednesday. "There's no leak per se."

According to the East Greenwich Police Department, the truck had not been removed as of 3:20 p.m. on Friday. Police said the truck will be removed as soon as the cleanup company is finished cleaning the truck, saying a crew had been working around the clock since 3 p.m. on Thursday.

The smell, which affected the noses of numerous South Jersey residents, led to several 911 calls to emergency crews around 3 p.m. on Wednesday. Soon after, authorities tracked down the reeking vehicle at the TA Truck Service Area on the 100 block of Berkley Road in Paulsboro off I-295 where it was releasing fumes from its rear tanker.

According to officials, complaints came from neighboring counties as far as Buena Vista Township, Atlantic County.

The East Greenwich Township Police Department said the tanker is expelling fumes from a fuel additive chemical called Lubrizol 1395 (Zinc Alkyldithiophosphate).

The chemical can cause health hazards such as possible skin irritation and eye damage, according to a safety data sheet.

Hazmat crews monitored and tested the air quality around the scene and officials confirmed there was no risk to the public despite the odor.

No injuries have been reported due to the chemicals released.

A representative from Lubrizol told ABC News Philadelphia station WPVI the company was aware of the situation and investigating.

The Gloucester County Office of Emergency Management will be opening a call center for residents with questions or concerns. The call center phone number is 856-384-6800. It will be open from 8 a.m. to 4 p.m.

-ABC News' Nadine El-Bawab contributed to this report