BurgerKing Japan will be releasing (on April 1) a special Whopper eau de toilette. It may be an April 1 prank so stay tuned. 

The current promise is that for that day (April 1), the purveyor of Whopper will sell the perfume for 5,000 Yen (about $US42) with a whopper. 

So I don't know if this is real, we'll just have to wait and see.