Aro – Air Purifier by Giuk Choi – Aro features mood lights and aroma dispensing based on the moods of the people in the room. To achieve this, it incorporates voice recognition system that senses the mood and tone of the voice of the people.
iBreathe: Fresh Air Anytime, Anywhere. iBreathe is the world's first wearable air purifier and air quality tracker. Checks air quality in real time. Indoor & Outdoor use. It's highly effective against air pollutants, bacteria, viruses, allergens, and air-borne diseases. Long-lasting, recharable battery. Auto-updates itself. Free Android/iOS app. See also http://ibreatheair.com.