I tried this UV light in different rooms here is my experience.

Three different bedrooms of similar sizes: I let it run for 15mins, 30mins, 60mins. The one thing that i definitely noticed was there was a plasticy smell left in the room. Now I do have carpets in my room that have been there for years so they have an acquired smell. That smell disappeared. the longer that i left the UV light on, the stronger the smell was. But and smell prior to that was gone.

Bathroom: It definitely killed and odors from the bathroom

Living room: Again carpet has been there for some years and the smell was gone. But plasticy smell was there. ALSO super important follow the directions. My plants were slightly damaged. The instructions clearly state cover any plants and keep pets away from the light