With respect to Bill and Ted, air guitar does not reduce air pollution.

But apparently medieval stained glass windows do.

"For centuries people appreciated only the beautiful works of art, and long life of the colors, but little did they realize that these works of art are also, in modern language, photocatalytic air purifier with nanostructured gold catalyst," said Zhu Huai Yong, a material scientist at the Queensland University of Technology...

An electromagnetic field generated by sunlight couples with the gold electrons' oscillations to create a resonance, said Zhu.

Science is just so very cool!