Although it looks like Coca Cola prefers Potassium Benzoate. For those on a low sodium diet, I suppose. Check also fruit jelly, juice drinks, salad dressing, etc. labels for benzoates. It occurs naturally in cranberries.
The guy could have spilled some soft drink on himself. Or, maybe they use sodium benzoate to maintain the quality of their product. I have seen the listing of Sodium Benzoate followed by a phrase like "to maintain freshness".