complain to relevant departments.

According to Baidu Law Pro, if you think the cooking fume in the catering industry is too big, you can complain to the environmental protection department. You can also complain to the health department that they have health problems, and ask the relevant departments to check whether they have access certificates for the catering industry and health certificates for employees.

article 81 of the law of the people's Republic of China on the prevention and control of air pollution: catering service operators who discharge oil fume shall install oil fume purification facilities and keep them in normal use, or take other oil fume purification measures to discharge oil fume up to the standard and prevent pollution to the normal living environment of nearby residents. It is forbidden to build, rebuild or expand catering service projects that produce oil smoke, odor and waste gas in residential buildings, commercial and residential complex buildings without special flues and commercial floors adjacent to residential floors in commercial and residential complex buildings. No unit or individual may barbecue food in the open air or provide a venue for barbecue food in the area prohibited by the local people's government.