According to the building admin, the roving guards detected gasoline leaking from our motorbikes parked inside the store. The smell of gasoline has permeated outside our unit and luckily caught the attention of the guards. We immediately rushed to the store and called Harry to meet us there. We're not sure the gasoline melted through the plastic/PVC bottle that Noe stored them in, or whether there was really a hole or crack on the bottle that caused the leak.
We had to take out the bikes and clean the floor again because it was so slippery. The smell of spoiled food has been replaced by the smell of gasoline!