Here is an interesting experiment presented by youtube user pieznice29. He made a high voltage flyback driver, and (as any normal guy would do) he started playing with the arcs and sparks. Watch what happens when a candle is near the arc. As expected, the candle lights from the arc. But when the flame is approached by the electrode, right before the arc occurs, the flame is "blown" by the ionic wind! This wind is so strong, that it can put the flame out. Nice experiment!