After analyzing 51 public restrooms, experts found that the stall closest to the restroom door consistently had the lowest bacteria levels (and the most toilet paper!). The first stall probably sees less traffic because it’s near the door and people want privacy. And when you’re finished, stand before you flush. When toilets are flushed, a fine mist of water containing contagious bacteria sprays up. You can catch intestinal bugs and hepatitis from it.