Chemical reaction hospitalises three

Three people were hospitalised after feeling unwell at a Chcik-Fil-A in South Carolina recently.  According to reports mulitple people began feeling unweel with sypmtoms of dizziness and and nausea. When first responders arrived they discovered that wo chemical products used for cleaning mixed after being poured down a drain at the restaurant that was backed up. This created an odor that made several people inside the building feel unwell. 

In total  13 people were examined by EMS at the scene, and three of them were taken to an area hospital. The restuarant was evacuated and fire fighters ventilated the building, which remained closed for two days after the incident.