This remarkably high-tech jacket is designed for the polite smoker who doesn't want to fumigate non-smokers in the area.
When exhaling, the wearer of the Smoker Jacket can blow down the side of the collar into a tube. The smoke is then sent through a channel of filters, making the clear fake lungs on the outside of the white jacket haze over.
The more smoke goes through the lungs, the darker they get. Over time, they'll eventually turn an icky black, reflective of the smoker's lungs. It was designed by Fiona Carswell and is meant to act as a health awareness.
The crisp white jacket actually looks really stylish, but you have to wonder who would wear something reflecting their ignorance for their health.