[header] How to paint metal [title] Work in a ventilated area. [step] Working around paint and rust particles can be harmful, so choose a well ventilated area where you can put a drop sheet down underneath your metal project. Wear gloves and a dust mask while you work. 
[substeps] Keep a damp cloth nearby to wipe away paint, dust and rust particles periodically while you work. This is much safer for you than waiting until the end to deal with them.