A doctor whose breath smells has no right to medical opinion.

Fischer’s aphorism treats personal hygiene as a prerequisite for professional authority. The doctor’s “breath” stands for the visible (or smellable) evidence of self-discipline and care; if a physician neglects something so basic, the saying implies, patients have reason to doubt the reliability of that physician’s judgments in more complex matters. More broadly, it argues that credibility in any advisory role depends not only on knowledge but on embodied example: counsel is weakened when the counselor’s own habits contradict the standards they recommend. The line is a pointed reminder that trust in medicine is partly moral and social, not purely technical.