I don't know of anyone that has used wood cherry (called Black Cherry in the South-East), but the history in the South is that the bark has medicinal properties. My parent's home had a Black Cherry tree in the front yard and it kept our driveway a mess with blue-black cherries mashed all over it. I was chased out of the house many times to clean the bottom of my shoes.
That history review revealed the bark was stripped from young black cherry trees for use in cough medicines, tonics and sedatives. From experience as a child, I remember deer, rabbits and birds eating the fruit. The fruit is still used for making jelly and wine, so it would surprise me if it has a toxic smoke. I would use it and the smoke shouldn't be bitter.
I use Maine black cherry frequently and it's excellent, especially with poultry. It comes in 10 lb bags (chunk form) and is produced by Maine Cooking Woods. Their wild apple is also quite good.
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