Aside from the filth, what happened to this tile?

[Fixmeup]

 

[Ernesto]

JUst looks dirty to me. Can't tell if those streaks are in the surface or not. Get it steam cleaned.

 

[havasu]

I agree. Looks like someone has used a dirty mop on them things one too many times.

 

[Ken]

I was going to say the tiles to the right are different sizes but my eyes could me playing tricks on me in my old age.

 

[rugaddict]

that explains the smell

 

[highup]

Looks like it's been waxed and the wax is scuffed and scratched.