Indoor carbon dioxide (CO2) can rapidly accumulate to form invisible pollution hotspots, posing significant health risks due to its odorless and colorless nature. Despite growing interest in wearable or stationary sensors for pollutant detection, effectively visualizing CO2 levels and engaging individuals remains an ongoing challenge. In this paper, we develop a portable wrist-sized pollution sensor that detects CO2 in real time at any indoor location and reveals CO2 bubbles by highlighting sudden spikes. In order to promote better ventilation habits and user awareness, we also develop a smartphone-based augmented reality (AR) game for users to locate and disperse these high-CO2 zones. A user study with 35 participants demonstrated increased engagement and heightened understanding of CO2's health impacts. Our system's usability evaluations yielded a median score of 1.88, indicating its strong practicality.

翻译：室内二氧化碳（CO2）可迅速累积形成无形的污染热点，因其无色无味的特性而构成显著健康风险。尽管可穿戴或固定式污染物检测传感器日益受到关注，但如何有效可视化CO2浓度并提升个体参与度仍是持续存在的挑战。本文开发了一种便携式腕戴污染传感器，可在任意室内位置实时检测CO2，并通过突显浓度骤升区域来揭示CO2气泡。为促进更佳通风习惯并提升用户认知，我们还开发了一款基于智能手机的增强现实（AR）游戏，使用户能够定位并驱散这些高浓度CO2区域。一项包含35名参与者的用户研究表明，该系统显著提升了用户参与度并深化了对CO2健康影响的理解。系统可用性评估获得1.88分的中位数评分，表明其具备较强的实用价值。