Can I use an airbrush inside?
If you would rather use it indoors, that's fine as long as you wear a mask. If you're doing a lot, consider one of the heavy-duty ones:



You can generally buy these anywhere you can buy spray paint or airbrush supplies.

Be aware that your lungs might not be the only place you don't want paint ending up when you're indoors - cover anything you want to remain paint-free with a cloth!