Ohh thank you! Will definitely try that. I’m afraid that I may ruin it by putting somethingI would try blotting it carefully with a white cloth and a solution of warm water and (one drop!) of gentle dish soap. To blot- gently press, rotate your fingers and lift to work the solution in without rubbing. Then follow with plain water in the same method (different cloth- you can use an old white tshirt) and allow to dry fully. Hopefully the dirt will come out! If this doesn't work, maybe a professional dry cleaner would have some tips. Good luck!