Find yourself in a national park and you will feel lucky to be alive. The sights, sounds, scents. Someone at Air Wick thought, Hey, let's capture that essence. But what might seem like a good idea is actually a terrible one, as the products in their National Parks Collection of air "fresheners" contain undisclosed chemicals. So, it's fake. And dangerous. "Fragrance" on a label means it can contain a cocktail of hidden chemicals that can cause harm (from allergies to cancer). That stinks.