Smudges after bulding HTML5

Hi everyone,

I’m having problem after building my project. The floor seems to be smudging up my reflections, as you can see in the attached picture. Does anyone know what is causing this?
I tried various adjustments to material, lightingmap, but nothing seems to work.

Picture provided is cropped, so it has lost some quality, but still you can see the problem on the floor.
Any info is useful!