Something felt wrong before anyone smelled it.

It was late, the lights were off, and the house had settled into that steady nighttime quiet when most appliances hum unnoticed. Then the scratching started. Persistent. Sharp. A cat who usually curled up without fuss began pacing, crying, and clawing at a closed bedroom door. His owners assumed it was restlessness. It was not. Within minutes, that agitation would pull them toward a smell they had not yet registered and a hazard they could not yet see.



