Legal analysis: If restaurants are opened under residential buildings and fumes disturb people, you can complain and report to the environmental protection bureau, urban management bureau and other relevant ecological and environmental authorities.

Legal basis: Article 1229 of the Civil Code of the People's Republic of China

If damage is caused to others due to environmental pollution or ecological damage, the infringer shall bear the tort liability.

article 1231 in case of a dispute arising from environmental pollution or ecological damage, the actor shall bear the burden of proof for the circumstances in which he does not assume or mitigate his responsibilities as stipulated by law and there is no causal relationship between his behavior and the damage.