The amount of lead and tin in fumes from soldering are minimal and with the above precautions, not a concern. Wash your hands thoroughly when you are finished leading, or taking a break. There are products available from your retailer that are made specifically for removing lead residue from your hands. Lead can, and should, be recycled, because it is a hazard in landfills. Lead scraps on the floor may be a curiosity to children and pets, both of whom are likely to chew on strange things, so keep it clean.
Many retailers offer the service of buying back lead scrap from their customers.
Pregnant women should consult their own physician about working with lead. Follow the advice of your doctor. Some use blood tests, others check your hair. That's right, your hair. Hair absorbs everything in your system, and if you have high lead levels, it will show up there.