I only run them like once a month or so, since I literally have no need for them as I don't go downloading random EXE's like half the idiots in the world.
Nicotine has never been addictive to me, whatsoever, no matter how many years I've smoked or how many I smoke a day.
As a workaround I think the best way to scan is to tell AVG exactly what drives and directories to scan instead of using the Full System scan with exceptions.