I've always used 60/40 rosin core lead solder. Always wash my hands when I'm done soldering.
The fumes isn't the lead but the rosin flux burning off...probably bad for the lungs but ok as long as you have some good ventilation.
I've always wondered if all the problems with the cpu and gpu's from the current generation of game consoles (360 & PS3) are a result of the lead free stuff..
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