One of the initial cadre of JetBlue pilots (formerly America West) would teach new hires to set high flow and blower override at cruise. After a small number of fan seizures (not on his flights) we were told not to use this technique to quiet the cockpit because they suspected it was a related occurrence.
Unless it is very hot outside, while on the ground I will select override when making cellphone calls to MX or Ops. The fan noise is in just the right frequency to make it hard to hear the other person on the line.