Brominated vegetable oil (BVO) is a food additive and not a flame retardant. They are totally different products.
The Bromine Science and Environmental Forum represents the major global producers of brominated flame retardants, which are used to increase the resistance to fire of flammable materials such as plastics in TV sets and textiles in cinema seating.
BSEF is not aware of any current or past use of BVO as a flame retardant and certainly our member companies have never marketed BVO as a flame retardant.
You can find some additional information on some soft drink manufacturer’s websites. For example see BVO’s reference on http://www.pepsicobeveragefacts.com/glossary.php#B