This is a hard outer shell virus. It lasts much longer on surfaces.
I sure hope this wasn’t some bioweapon that was released by accident.
Aerial disinfection
“Regional governments in China have undertaken efforts to contain the spread of the virus, so as to prevent it from reaching currently unaffected areas. Notably, the government of the Henan province has warned residents from Zhengzhou and other cities to stay indoors for two-hour periods to allow aircraft to spray disinfectant over large areas, in order to prevent the virus from spreading there”
https://en.wikipedia.org/wiki/2019–20_Wuhan_coronavirus_outbreak#Aerial_disinfection