Facing the problem that the newly-opened barbecue restaurant downstairs smells too big, we can solve it through legal means. First of all, you can complain to the local environmental protection department. If the barbecue discharge of this store does not meet the requirements of the Law of the People's Republic of China on the Prevention and Control of Air Pollution, the environmental protection department has the right to ask it to stop business or make rectification.

according to the law, article 81 stipulates that the catering industry that emits oil fume must install purification facilities and maintain normal operation, so as to ensure that the emission reaches the standard and not pollute the living environment of the surrounding residents. It is particularly important to note that it is forbidden to build, rebuild or expand catering projects that produce oil fumes in residential buildings and commercial and residential complex buildings without special flues, and it is forbidden to barbecue in the open air.

If the barbecue restaurant does not cooperate with the rectification, Article 98 clarifies the legal liability. Refusing to check or provide false information will face a fine of more than 21,111 yuan and 211,111 yuan, and may even violate the administration of public security, which will be punished by the public security organs. Therefore, we have a legal basis to safeguard our rights and interests and ensure that air quality will not be affected.