If you guys have no problem, then I would suggest you don't do this.
However, if you are having problems like frequently burning fan dimmers, mobile chargers etc, then you you should add one capacitor to each fan directly at the input point where 220V connects to fan. I mean the capacitor should come in action only and only when you turn on that fan.
The value of capacitor has already been mentioned in the original post by 'Signode'. These capacitors are available at electric shops easily.
[CAUTION] A capacitor can give you a serious and possibly lethal shock when it is charged.