Diffusion model simulation of odor pollutants in livestock and poultry farms based on environmental monitoring of the Internet of ThingsJing Zhang, Liwei Xing, Guodong Cheng, Yonghan Wang and Shuqing HanE3S Web Conf., 261 (2021) 03018DOI: https://doi.org/10.1051/e3sconf/202126103018