The fumes from both leaded and lead-free solder are identical; it's a rosin that helps the metals bond. The soldering process does not get the metal hot enough to cause lead to vaporize, so there's no danger from that. The hazard is from contact; handling leaded solder and then eating, picking your nose, etc., can introduce lead into the body. So wash your hands!
The fumes from both leaded and lead-free solder are identical; it's a rosin that helps the metals bond. The soldering process does not get the metal hot enough to cause lead to vaporize, so there's no danger from that. The hazard is from contact; handling leaded solder and then eating, picking your nose, etc., can introduce lead into the body. So wash your hands!