We've often heard that smells are one of the more powerful influences that jog our memories, and that's particularly true when we catch the aroma of a food we've always liked.
What also helps is that a lot of the fast food favorites most of us enjoyed as children had very particular smells. For instance, fried chicken can give off a variety of aromas depending on the recipe, but it's always pretty easy to recognize the specific smell of KFC.
And as great as it can be to relax in a backyard while someone is grilling, that phenomenon is also true of McDonald's cheeseburgers. And now, there's a way to immerse yourself in those childhood memories without actually putting your body through another McDonald's run.