Property office building

You can report complaints, complain to the local housing management office or the property department, or petition the public platform.

If it is confirmed that the chemical composition of antirust paint is harmful to human body, you can even call the police directly.

On the other hand, you need to know:

It is a normal property maintenance service for a property company to brush antirust paint. As long as it does not endanger personal safety, it is normal behavior. Moreover, there is no restriction on air circulation for the closed housing distribution, so generally speaking, your complaints or letters and visits will not be accepted.

I suggest you have a look. If the antirust paint used in the property is a regular product with a brand, it is definitely not a private chemical that endangers personal safety. Instead, you can consider complaining.