Can you explain why? We don't have a clue what they are spraying. Some say it's nothing but a bleach solution. But who knows?
I read a report that said forget the masks, they do nothing. However, leave your shoes outside and treat them like you’re handling a kidney from an Aides patient. Handle them very carefully then washing your hands for a full minute afterwords. They know something, Coronavirus is living on the concrete and the ground
If that is a bleach solution, it is only going to add to their problems. As it is, the average Chinese citizen has two strikes against their pulmonary health: the smoke in far greater percentages than those in the West, and many of them live in cities that are more polluted than ANY Western city has EVER been. Now you’re going to have them breathing in a bleach mixture? It ***might*** kill some of the corona virus on the ground or streets, and maybe a bit elsewhere, but this is leaving them MORE vulnerable to a deadly result if they get pneumonia (now, from corona virus, or later from anything else).