It was a moment of bitter realisation for Pavneet Singh Puri and Madhur Mehta when they returned to Delhi in late 2014 after spending around three years in Australia developing Androidly, the world’s first smart watch. Since leaving a country that has the cleanest air in the world, they were appalled that the air quality level in their homeland had taken a steep dive. A few months later Pavneet’s sister along with her seven month old arrived from Melbourne only to see the child struggling to breathe. “It was shocking, but what shocked us even more was that nobody was doing anything about it,” remembers Mehta. Deciding to take on the problem, Mehta and Puri set about creating Kurin, the world’s first smart air purifier.