ok, I am not science challenged to figure this out. But, I am more inclined to wonder when all these various carbon impacts for everything is added up we may very well reach a figure that is far beyond the number of miles driven by us. At that time, we will need to another baseline to compare the carbon impacts of everything.
Though, from a process standpoint, the tummy tuckee has to drive to the clinic where the tummy tuckers have to drive there too. Then once the deed is done, a bunch of things have to happen to actually move the tummy fat somewhere. Obviously, such packaging and transportation is more involved than dropping the fat in a baggy and hauling it off. Anyhow, once it gets to the incinerator, I assume there are checks and balances in place that kick in to ensure that such fat is actually incinerated. Anyhow, the backend billing systems do kick in too and further drive the "servers" eating power and spewing heat and whatnot.
So, there you go, that is a carbon footprint of some type. After all, whenever we move a carbon atom from point A to point B there is an equal reaction happening (at least, as in physics).
So, everything is connected. But, we can never create any more carbon in this infinite world. We can definitely move them around in a more beneficial manner that ensure us mere mortals go extinct. Either way, the carbon will still be around.