if you heat kingsford in an oven, it will emit that white smoke
it smells terrible and tastes even worse.
Not everyone can taste it though, it seems.
KBB is fine, as long as you treat it right.
My rules:
- never add fresh unlit KBB to a cooker that has food in it
- never add food to a KBB fueld pit until the white smoke is gone (usually takes about 40 minutes with minion method)