Had to evacuate everyone out from my work because it was on fire. Me and a co worker smelled something very faintly and we thought nothing of it. But the smell got stronger, so we alerted a manager, the three of us checked the outside of the building to see if we could see smoke and nothing, we came back in through the warehouse door, we entered the main store and saw smoke coming from the vent. My manager called the fire dept, than we all scattered around the store and alerted our customers.