Soldering doesn't get hot enough to make significant lead fumes (although flux fumes are also bad to breathe). The main risk from lead solder is from cleaning y

Soldering doesn't get hot enough to make significant lead fumes (although flux fumes are also bad to breathe). The main risk from lead solder is from cleaning your soldering iron. Both the common techniques (damp sponge and brass wool) make many tiny balls of solder. They can be hard to see, and because they're round and dense, they can travel much farther than you expect by rolling and bouncing. They can get caught in clothing, and from there potentially fall into food. I don't personally use lead solder for this reason. If you have a good temperature-controlled iron then SAC305 is almost as easy to use.