One reading is one location
Sensors report conditions where they sit. Shelves, crowded corners, cold surfaces, and the air immediately around active equipment can differ from that location.
Inspect the wet hardware
- Reservoir walls, lids, seals, and fill ports
- Wicks, sponges, beads, tubing, and fan housings
- The wood below or behind the device
- Areas where condensation or spills can collect
Biofilm is a possibility, not a diagnosis
CDC guidance documents bacteria and fungi living in mixed biofilms in plumbing and devices. A visible film in a humidor reservoir still needs context; its presence does not identify the organism or prove where it originated.
Check the measurement system
Compare calibrated sensors in more than one location, inspect trends rather than a single moment, and check whether airflow or the humidifier's output creates a persistent local wet zone.
Correct before resuming
Remove suspect equipment from service, follow its cleaning or replacement instructions, dry affected compatible surfaces completely, and verify that the local moisture problem is gone before returning cigars.
