Smell Atlas
Follow the pathway, not only the label.
Onset, duration, airflow and nearby systems often separate moisture, drainage, combustion and electrical sources.
Describe your clue →Rotten-egg odor
Treat a possible fuel-gas odor as an immediate safety event.
- Trigger
- supply leak or water chemistry
- Strongest location
- utility or plumbing area
Describe first. Interpret second.
- TriggerWhat changed immediately before it began?
- CycleDoes it follow startup, flow, heating, wind or room use?
- LocationWhere is it strongest, and does that move?
- Stop conditionHeat, smoke, gas or electrical odor changes the response immediately.