"Is it blowing on you?"
"Is what blowing on me?"
"Is the air blowing on you from the window?"
Was it? I hadn't noticed. And it wouldn't have made a difference. But to some people, it makes a big difference.
I have this association of a stuffy British lady in the 19th century whining "Shut the door! There's a draft!" But in fact keeping track of various air currents is still in practice in Russia, and perhaps in other countries.
This article describes it well: continue/-