Why can a VSC-focused monitor disagree with organoleptic scoring?
Organoleptic scoring reflects the overall odor mixture a human perceives, not only VSC concentration. Several studies here note that breath can contain other odorous compounds, so VSC-only detection can miss part of what drives perceived malodor.

Why did Breath Alert™ look weak in one study but strong in another?
The adult study tested people without a malodor complaint and found low accuracy versus OT, while the pediatric study used a larger sample and a defined threshold approach with three OT examiners. Population, protocol, and cut-off definitions can materially change apparent performance.

What does it mean that the B/B Checker® correlated with OT across oral, exhaled, and nasal air?
It suggests the device’s multi-gas sensor may be capturing odor-relevant signals beyond VSCs alone. Correlation is not perfect diagnosis, but it supports the idea that broader sensing can track perceived intensity more closely in different air channels.

Is organoleptic testing “better” even though it is subjective?
Within this evidence set, OT remains the reference because it directly measures perceived odor intensity and integrates many compounds at once. The trade-off is that it requires trained examiners and careful standardization to reduce variability.

Should portable monitors be used alone in clinical practice?
These studies support using them as adjuncts, not replacements, especially in adults where mismatch and under-detection were demonstrated. Combining an objective reading with OT or a structured clinical assessment is the more defensible approach based on the data presented.