Green Bubbles

So, like, what if we had these big green bubbles, right? They float around cities and they, like, suck up all the bad pollution stuff. They’re made of some super smart material that can filter out the bad air and release clean air. It’s kinda like a vacuum for the sky, but way cooler. And when they’re full, they just float to a collection point and get emptied or something. It’s like a futuristic way to clean the air!