If you soap with coffee as liquid it will smell vile when the lye hits it and it won't impart any scent to your finished bars. But it's said to neutralize odors. I use very fine (espresso grind) coffee in my kitchen soap.
I've washed my hands thoroughly after cutting garlic only to still be able to smell it hours later. Maybe some people just absorb odors worse than others or something, but when I use my coffee soap it really does eliminate strong odors such as onion and garlic. Like Judymoody, I use super strong coffee in place of the water then add grounds at trace. So you get a bar that's not only a natural deodorizer, but a great scrub.
I second the coffee I make mine all the time for men that work in.cars. helps with the oil and engine grease smell also. My husband says it is better than tomorrow. I make coffee with distilled water and in a coffee press then out it in the fridge till cold or I am ready to Soap then weigh it. Add water if need be and save my grounds and add at trade. I also add coco it really is a great soap.