Baudelaire is known for his dark and often grotesque imagery, so it's possible you might be thinking of one of his poems that deals with the theme of death or decay. Some possibilities include:
* "The Carcass" (Le Charogne): This is one of Baudelaire's most famous poems, dealing explicitly with the decomposition of a dead body and the cyclical nature of life and death.
* "The Flowers of Evil" (Les Fleurs du Mal): This collection contains many poems that explore themes of mortality, sin, and the grotesque, often with imagery of decay and death.
* "Spleen and Ideal" (Spleen et Idéal): This section of "The Flowers of Evil" is particularly focused on themes of melancholy, disillusionment, and the fleeting nature of beauty.
If you can provide any more information about the poem you're looking for, such as specific lines or themes, I might be able to help you identify it.