Well,Dayton is not exactly in the "heart of traditional Southern BBQ",so there may be some difference in taste-or semantics about the terms.[I have family in Franklin,Middleton,N. KY]
If a lot of folks in your area grill,there are a couple thoughts.
Much charcoal has lighter fluid added in the bag-InstaLite,or folks use charcoal lighter to start fires.
Many of us that judge bbq can instantly spot that as a petroleum taste.
Hopefully your folks don't want that from you.
Most cooks think of charcoal as being a flavorless HEAT source,to which they add flavor woods for smoke at appropriate times.The better/more pure has less junk included in it.
Think of a coal burning furnace, that many folks had at home,and you have charcoal.
Now,folks that use their charcoal grill for burgers,chops,dogs,etc are cooking directly over the coals and the grease dripping on them produces the aroma and flavor of burning grease.
There are some restaurant adaptations that put racks four feet above the coals[typically stone/brick built into a chimney operation],that gives slow and low cooking,but also drips on the coals.
As to putting charcoal into the firepot to get the "charcoal taste",it might damage your fireplug,intefere with the burning of the actual flavor woods.
Hope this helps a little.