DIY paint booth fan question

Yep I know a guy I did some flooring for and started pulling a motor out of a 96 cavalier for my 94. Saw him painting one day he td me never to start. He can't smell or taste anything. And that is basically the minimal you get from painting u protected.
I've since worked at a body shop. Not allowed in rooms where painting is happening without protection .
I'd suggest a couple 8 inch inline fans. One sucking in one blowing out. The one sucking in I'd put an air filter on to keep particles from getting in.
Also do the ever use WD-40 in a garage you planning. On painting in period. Years later and the silicone particle still fly around. When they land during paint you get fish eyes