Airbrushing doesn't really create a lot of overspray like a rattle can, especially if you don't dial the pressure up really high. I have a friend who airbrushes fine scale models indoors. He just opens a window for ventilation, that's about it.

I've done large areas of cabinet art indoors (all of the red lines on a Dr. Who cabinet). I had the pressure cranked higher for that job, and it was for a longer duration, and I did notice that some overspray wafted around the room as evidenced by the red color in my dehumidifer dust filter, lol. So the amount of overspray (if any) probably depends on a few factors like size of the job, the pressure used, and the duration of time you're gonna be spraying.

I use Createx paints too.

I've done a lot of airbrushing over the years, mostly a small hobby gun for doing scale models and sometimes in a shed. It's bloody surprising just how much minutely fine over spray gets out there in the general vicinity. It's not til hours later on that you notice it as much cause it takes a while to settle. Mind you i'm talking about using water based acrylic lacquer and thinner based enamels but i don't think the type of paint will make a huge difference. If you have anything in the area that you absolutely don't want paint "dust" on i would advise either moving it out of the room or covering with something, just as a precaution