There is nothing wrong with the air...
https://www.bing.com/videos/search?q=close+encounters+of+the+third+kind+mask+scene&docid=608030496844745973&mid=8255AF85B0DE8C3BCDCF8255AF85B0DE8C3BCDCF&view=detail&FORM=VIRE
But; but...
...all indications PROVE that...
https://www.bing.com/videos/search?q=close+encounters+of+the+third+kind+mask+scene&&view=detail&mid=DE9409570F008CEABADBDE9409570F008CEABADB&rvsmid=8255AF85B0DE8C3BCDCF8255AF85B0DE8C3BCDCF&FORM=VDQVAP