I'm sure this topic has been discussed at some point but looking for other people's experiences. I generally buy chunks from Home Depot-Apple, Pecan, Cherry, Hickory, etc., and some pcs have bark on them. Sometimes after I put it in the fire I will start to get an "OFF" smell. Usually seems to happen with Hickory wood. And I always remove when i smell it. I would eventually like to find a local source for some fruit woods and when i do I'm wondering if removing the bark is something others do.