The source was earlier.
Surface products still matter. They were just being asked to do the entire job alone.
As we studied odor pathways more closely, the direction became clear. Many of the cues people try to manage externally begin upstream, through digestion, metabolism, and the circulation of volatile compounds through the body.
The early clue came from chlorophyll-rich daily routines. People noticed cleaner breath, less midday checking, and a quieter baseline. The problem was consistency. Greens were expensive, inconvenient, and difficult to dose with precision.

