HOWLAND TWP., Ohio - An unlikely odor was allegedly to blame for one Phantom Fireworks employee being sent to the hospital and other workers being evacuated from a company warehouse.

Dominion Energy arrived at the building in Howland Township just before 12:30 p.m. Monday when first responders were told there was a possible gas leak. After spending 30 minutes at the warehouse, a Dominion representative said the smell was not natural gas.

It turns out the scent flowing throughout the storeroom was gas from sewer water, according to Phantom Fireworks Vice President Bill Weimer. The incident occurred while internal pipes were being flushed, Weimer said. 

Howland Township Fire Captain Brian Pugh said the pipes were inside the facility's sprinkler system. Pugh added that there was stagnant water floating in a sump pump.

The stench caused one worker to pass out, reports said. He woke up soon after but was transported to a nearby hospital to be evaluated for any further treatment. Phantom Fireworks said the man is okay.

Even hazmat crews were reportedly activated to check out the smelly situation. However, employees were allowed back into the building and returned to work Monday afternoon.

Both Dominion Energy and Howland Fire have left the scene.