Sure, it's likely a marketing ploy, but at least the fine people at Burger King actually produced some of the stuff for release. Burger King Flame — the King's own body spray — is available for $3.99 from Ricky's, a New York based Halloween and novelty retailer. It might be worth it, if you're a fan of the Whopper: "Behold the scent of satisfaction, with a hint of flame-broiled meat." Then again, you could just get a job at a BK and smell like greasy meat for free.
Just don't wear it to the slaughterhouse, unless you're cruel. Or my house, for that matter.