Odor Due to UV Disinfection (OR-16-C033)

It has been noticed by many users that whenever a germicidal UV disinfection is performed in a room, there is often a strange odor left behind. It is not ozone, which can be easily identified and measured. It is more like a slightly pungent smell. It's actually easier to acknowledge the smell than to describe it. Until now, no satisfactory scientific explanation about the origin of this peculiar odor has been provided. In this paper, the authors provide a clear explanation of the source of this odor. Evidences show that the root cause seems to be the interaction of UV with airborne dust.