Mysterious yellow fog covers Wuhan , China

Early this morning, the three million residents of Wahun, China arose to a grizzly site: the entire city had been engulfed in a yellow fog cloud. As people flee the city, young and old are asked to wear gas-masks and stay inside ventilated units. Chinese officials claim that the cloud was caused by farmers burning wheat (ha, because we have totally seen that happen). External references are pointing to a potential chemical plant melt-down. Anyways here is a video of the horrendous site:

We have reason to believe that this might be a chemical explosion near the city.
China has politely asked us to stop talking about this matter. Dearest apologies, we respect china and hope they can deal with this in a professional matter.