Decadent, sweet, creamy desserts are for palates that love intensity but hate "sharp" flavors. If caramels and creams are the stuff of your cravings, you're probably going to love Thierry Mugler Angel ($79). It was the first gourmand scent, and it's still legendary. It's all cotton candy, caramel, and vanilla alchemically baked together into a perfume.
Loving custard desserts could also indicate that you prefer light yet buttery textures and tastes, though, so if you're in this group, try a similarly sweet but less sybaritic treat, like Laura Mercier Crème Brûlée ($50). It reproduces the sugary-milky accord of the dessert without any of the heaviness.