I am concerned about your lungs?!?! Can this method be used for a fender rust spot?
Apply Primer and Paint: Apply two coats of Zero Rust paint or primer to the prepared, clean surface. Wait for each coat to dry before applying another. Once the primer or Zero Rust dries, sand the entire area again with 600 grit sandpaper, clean with wax and grease remover, and then topcoat with your automotive paint.
Dent repairs are one thing, rust repair is another. If your car is suffering from rust holes, it's probably not worth doing much cosmetic repair. For this reason you can be looking at serious repair costs when repairing rust.
Don’t let rust take over your vehicle. The best time to treat your vehicle is when you have small surface rust spots. But it’s never too late to remove rust. Even in some of the most advanced stages of rust development, you can still save your vehicle. Here’s what you need to know about getting rid of rust on your car or truck and preventing it from returning.
Surface rust only affects the top layer of your vehicle’s body panels. This rust appears in nicks and chips in the protective paint coating. Treat rust at this stage for the most straightforward process. You will also get the best results with the least amount of effort if you treat surface rust immediately and do not allow it to spread further.