All the three-ish kinds of cocoa butter I had bought in a stationary store were deodorised. People (including me) are surprised how (not overly strong but) penetrating the smell of unrefined cocoa butter is. Probably they don't want to deal with complaints (I wouldn't complain
).
But seriously, cocoa butter is extreme. I have had mine delivered, opened the box – it smelled like cocoa butter, before even digging towards the CB jar. I've melted it up, put the pieces into plastic bags, into a cupboard – it smells like cocoa butter whenever I open the door. The silicone moulds I've used – smell like cocoa butter. One year old CB soap – smells like cocoa butter. Washing hands with that soap – and the skin smells like cocoa butter.
I haven't tried to integrate this CB smell into a fragrance profile, but I don't think it's difficult. For obvious reasons, it fits well with everything chocolatey. But it might do just as well with coffee, sweet/biscuity/malty notes, vanilla, peru balsam, ginger, maybe the inevitable oatmeal%milk%honey? Then anything citrus (orange, litsea cubeba, tangerine, lemon tea tree, bergamot).
I imagine a luxurious bar high in cocoa butter, with a vanilla FO strongly discolouring to a deep brown … mmmh
tl;dr: It makes no sense to work
against cocoa butter, smell wise. Work
with it, and it'll reward you.
And oh, even if you can't return it, I'd contact the seller nonetheless, if only for their warehousing/QM. Or tell them you're fine when they send you the more expensive product at the price of the cheaper.