I work in a smoke free environment and use an air purifier. If absolutely necessary, only light cleaning will be done so as not to damage any items.
There are areas on some pieces that were over painted with gold, and some very small black smudges on the coffee pot that I did not attempt to remove. Please inspect the photos, they are part of the description. If you have questions, message me and I will do my best to respond within 24 hours.