How to visualize the aroma of coffee? I want to do an experiment to visualize the aroma of coffee. I urgently need expert advice!

Schlieren photography can capture the air flow patterns that are usually invisible to the naked eye. This process requires a bright light source, accurately placed lenses, a curved mirror, a blade to block part of the light, and other equipment to observe the fluctuations in the air and photograph them

But I don't know how to do it. Please check it yourself.