Airclammer
Someone who doesn't turn on the air in their vehicle resulting in a unpleasant, clammy, muggy, and 'like it's been breathed before' feel to the air. (especially noticeable when breathing)

This is most prominent in cars with cloth seats which adds a dusty accent to the air.
"Wow, thank god we got out of that car, I couldn't breathe."

"Yeah I know, Doug's such an airclammer.