Babyís Breath Filter FR205. The Babyís Breath filter integrates 30 sq. ft. of true medical grade High Efficiency Particulate Arresting (HEPA) with an activated gas trapping military carbon cloth to remove odors from pets, smoke, tobacco, gases and VOCís from carpets, household chemicals and furniture. HEPA is the most effective filtering media on the market, capable of removing 99.97% of all particles down to 0.3 microns and 95% down to 0.1 microns. This filter fits all junior size Austin Air purifiers.