Recommended mask for Airbrushing acrylics outdoors?

[Xantippos]

Hello, I've just made the step to buy an airbrush, after a long search to find the more suitable one. Now I am in the need of finding suitable protection for when I start to use it. However, while searching on the net for advice, there is hundreds of opinions, from you just have to open the window, to two-filter mask and eye protection.

I would like to to know what is your opinion. I will be airbrushing outdoors on my terrace, I plan to make a sort of cardboard box so dust doesn't fall on my model, and I will only use acrylic paints, thinned down with water (vallejo, game color, citadel and humbrol acrylics). I am inclined to buy a good one which also serves me for other nasty stuff I might be using in the future, but I don't know if a mask with some filters can be very good for some thigns and not enough for others, so I have thought better to ask specifically. 

 

Thanks for reading.