If it's like my friend, it's not actually the paint, but the 'spray' part that they add into some cans.
Or are you having a reaction on your skin? That would be ...well, easier to take care of. Long sleeves, long pants, gloves and a face mask. The air allergy...well, you'd need a full filter mask, and those are really expensive.
Look into an paint gun. Those little air guns they sell for painting models? They don't use the same chemicals as spray cans. ...kinda expensive tho. But they're easier to use for painting large projects than using brushes.