i was soldering one day in college and afterwards my instructor told me to go wash my hands because lead is known by the state of california to cause cancer....i told him we dont live in CA and i grew up carrying pellets for my gun in my mouth...so if i was gonna get it, i already had it
but i know what you mean about the flux....i got some stuff from my dad...he had it poked away in the corner of his shed in a little blue jar. It was made in like 1962 or something....not sure if its that old, but its OLD...and it works better than anything i've got at work