science

Well you should be washing your hands, and using lead removal soap for washing probably wouldn't be a bad idea

But with soldering, unless you're doing something really wrong, you're not really going to be spraying lead around the room, to settle on your clothes and such and your soldering iron or even a standard blowtorch torch isn't anywhere near hot enough to vaporize lead, so inhalation isn't really a risk (to say nothing about fumes from your flux or whatever else you might end up burning, good ventilation is still a very good idea) and hopefully you're not soldering on any kind of food prep surfaces.

With shooting, there's a lot more risk of airborne particles and bullet fragments and such as well as fumes from lead based chemicals in the primers, so lead kind of gets everywhere.