Have you tried liverwurst or limburger cheese? Both are stinky so they might cover up the odor of the pill.
There's also a device called a pill-popper that is like a syringe that helps pop the pill to the back of the mouth. If you could pop, then follow up with super-tasty treats to help the pill go down, maybe that would help? I've never used one; I've just seen it in catalogs.
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