Often. 😁

Sometimes, she will get a volunteer or two, set them up with sufficient space, and have them inhale some of her nanomachine-laden gasses (sometimes from a balloon, sometimes from a hose and tank, rarely from the tap). Then she keeps them around for a weekend and sees what happens. At first, she was looking for someone who the nanomachines behaved differently in, as part of an effort to find a cure. While that's still the goal, she just kind of likes the look on people's faces when they get all airoused and buoyant. Hey, it's still mostly ethical!