What was the foul smell that forced the entire Guam Homeland Security-Office of Civil Defense to evacuate late Tuesday? Hazmat teams with Guam Fire Department and the Guam National Guard Civil Support Team spent hours today trying to find the source, but had no luck.

The odor was reported around 4 p.m. yesterday. One person was even rushed to Guam Memorial Hospital after experiencing health issues from the bad smell. Officials this morning were fully covered up as they went inside the bunker-type building to test the air.

Results show no signs of anything hazardous.

GFD spokesperson Nick Garrido said, "Nothing with our tools and equipment. We weren’t able to detect anything last night. Only from what the employees had said and we take that very seriously."

The all-clear was given at 1 p.m. Employees will be allowed to return tomorrow. Officials added that operations including E-911 were uninterrupted.