Here is a quick solution I put together earlier this week. The fumes from solder (more so the flux rather than lead) are not particularly healthy to breathe. I usually solder in a room with decent ventilation but I was meaning to set up some kind of fan. My quick solution was to take a small muffin fan from my junk box, glue it to a heavy block of marble I had (from some old trophies) and extend the wires to go to a bench power supply. Sitting this unit next to the soldering iron or PCB will keep the fumes away while I am hunched over a board during soldering. It only took about five minutes to throw together from junk parts I had lying around.