No, windows units recirculate indoor air. Intake is through the filter and then comes out vent. That air blowing outside is outside air that blows through the condenser. The air blowing indoors is blown across the evaporator. Same with central AC. There might be some high dollar systems that bring in outside air. I know some automobiles have fresh/recirculate option. Definitely not window units though. I’m EPA certified for automotive AC but not residential/commercial.
Yes, my car has the fresh/recirculate button. The past two weeks, I’ve just opened the windows and sunroof.
Thanks on the window unit.