Remember the anti-drug commercial where illicit drugs (played by butter) fried a brain (played by an egg)? Over the action, a gravelly voice intoned "This is drugs. This is your brain on drugs. Any questions?"
Those PSAs were a fixture of my childhood. Now, well into adulthood, I wonder if it is perhaps time for a redux. But in the sequel, instead of playing drugs, butter would play the part of dirty air.