If it is bothering him and he is constantly opening uis mouth to try to get rid then i would interfere and get it out sooner rather than later. Use a qtip to gently open the moutha nd tweezers to remove the item. If however the snake swallows the item it should be fine with the right husbandry.
Think about the wild, i bet most snakes eat the odd leaf, piece of bark, dirt etc
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