Building A Paint Booth

I'm building a paint booth for my son. He paints a lot and smoke is bad in the basement. So what can I use the exhaust gases. the cabin is not very large maybe 2 feet wide by 2 feet deep.

Home Depot or a place should have several types of vents that work very well for this application. And very simple to install, without firing a heavy burden for you to run any power outlet.

you can get an old furnace fan and connect to a flexible conduit available from your local hardware store. Cut a hole in one end to accommodate the fan and led to a window. you could even make a hole to fit the flexible pipe in a piece of cloth and put it in the window so as not to jump into the room or house. The flexible pipe allows easy storage. The old furnace fan, you should be able to get cheap salvage yard or companies which are upgrades of the furnace.
your health status of children is worth 40-50 dollars spent
cheers

get a cheap kitchen ventilation hood. Just run without the filter, exhaust pipe outside.