A few years ago, they were talking about remodeling our offices. Of course, allowing us to open the windows to get some fresh air was out of the question, so I suggested that instead we ask for "Passive Air Ventilation Systems" and fill our request with technobabble that ultimately meant we would be allowed to open the windows to get some fresh air.
Today I rented a car. On the side of the car it says "Warning: car is protected by a passive security system."
I think this means it has a lock.
I don't know whether to be amused or frightened.