The weather gradually became warmer after the New Year, but the damp, musty air can be a nuisance. While there are many deodorizing and dehumidifying products available in the market, coffee grounds are a much more natural, eco-friendly deodorizer. In this iLearning video, Tsang Lai-sheung from Kai Shing demonstrates how to upcycle coffee grounds and other waste materials into practical, aesthetic deodorizers.