What else can I use other than a Respirator mask to protect myself from spray paint chemicals?

I make art with a lot of spray painting, but I can't afford a respirator mask at the moment or in a while. I don't want to damage my brain, from breathing in the chemicals. Are there any techniques or other items that can protect me from the spray paint chemical? ThanksWhat else can I use other than a Respirator mask to protect myself from spray paint chemicals?
put down the paint %26amp; leave the room