- lead does not vaporize at the temps used in soldering.
- lead free solder also needs fume extraction. even more so actually, because it is used at slightly higher temps.
- even with perfect fume extraction, leaded solder can still poison you, because you touch it and then touch your face without washing your hands.
- if you are prone to allergic reactions from solder fumes avoid solder with a rosin core, use synthetic flux instead.