The glasses aren't going to help with your allergies. But some inventors think that a tiny dust-blocking device might. iStockphoto hide caption itoggle caption iStockphoto Shots - Health News Tiny In-Nose Filters Aim To Keep Allergies At Bay March 11, 2014 Tiny Nose Filters sounds like a prog-rock band on NPR. But these filters do exist. They're designed to block allergens, and one study says they help. Other allergists aren't yet convinced.