Really it's pretty unimportant (if not totally unimportant?), I was part of a study for the Health and Safety Executive to determine the need for fume extraction.
The sole reason for the study was an incredibly small chance that flux fumes may trigger attacks in asthma sufferers - there were no other health concerns with soldering at all, and no risks for non-asthma sufferers.
The result of the study was that there were no requirements for fume extraction in a service environment (and the H&S were actually unable to find a single asthma sufferer in a service environment), BUT it was required in a manufacturing environment, where you were soldering continually for 8 hours a day.
If you don't like fumes in your face, then (as suggested) just have a fan to blow them away.