Solder fumes are not good for the body. Use this fan to protect yourself from harmful soldering fumes while soldering.
This extract extracts fumes by sucking the air in the region in front of it. It works directly of 240V AC mains and requires no addition circuit.
Just keep this extractor 5 - 25 cm away from the board you are soldering, connect it to 240V mains and it will do its work by sucking the soldering fumes away from you.