If someone that is exposed to solder fumes for a few hours from working with art supplies have a good chance at lead poisoning fumes at a far no mask?

Need more info: Is the exposure just a few hours or a few hour/day? If the latter, there may be cause for concern. If you have prolonged exposure you may wish to consult your doctor for blood lead test.

Risk variable: Many craft solders are lead free or have very little, so this is one variable to ponder. How open/ventilated the space /how close you were to any fumes/ etc.The further you were from the fumes, the less the risk, if you did use leaded solder. A simple blood test can determine if or how much you had.