/challenges-projects/design-challenges/design-for-a-cause-2021/b/blog/posts/environment-monitoring-based-on-arduino-nano-33-iot-and-bme680-5By: Ahmad Radhy Volatile organic compounds (VOCs) are gases that are given off by many indoor sources. Concentrations of most volatile organic compounds are higher in indoor air than outdoor air. VOCs include a variety of chemicals that can caus...en-USTelligent Community 12