At a market in Bangkok, stallholders say they had no idea initially about a boxy structure covered in gunmetal grey panels that was quickly built and installed opposite their stalls.According to them, nauseating oil began to waft through the area, where a hospital is also located, several months ago along Rama XI, an arterial road in the heart of the Thai capital, prompting complaints that led to the revelation that a new data centre might have been set up.More worryingly for the stallholders,...