Wynd’s air purifier has broad ambitions and a short reach

The Wynd smart air purifier is designed to create “bubbles” of fresh air — small, one-person respites from pollution, allergens and other detrimental particles floating in the ether. It feels almost dystopian, a world in which we’re required to arm ourselves against the air around us, but the product clearly struck a nerve, with more than 3,400 supporters backing the project to the tune of $