Air Conditioning suspected to play major role in coronavirus spread

[NewsViews]

 

[Galaxy]

Yes because it circulates the same air again and again.

 

[Galaxy]

It costs lot more to bring 100% outside air,cool it ,use it and exhaust it. So most of the places use some percentage of the used air(since it is cool) to recirculate again and again. Especially in large buildings with packaged type Air handling units.