Since the Hair Blower's POWER CORD is the VHF Antenna for RADIATED Emissions
, Ferrite EMI Suppressors should be fairly effective...and even better with one at either end of the Power Cord [and since they seem to come in packs of 10....why not one or more along it's length]. And external EMI/RFI Filters Suppress the CONDUCTED Emissions
. But I think buying a new Brushless Hair Blower is the best first step.....
Except for the Tripplite ISOBAR series (1440 Watts), all of the other Surge Protectors with EMI/RFI Filters I cited above are rated for 15 A (about 1800 Watts). If you are contemplating buying a Hair Blower that draws significantly more than 1800 Watts, you're going to need a 20 A Circuit [with AWG10 Wiring per NEC Code].....which is fairly rare, except perhaps in the Kitchen....or some newer homes.
Conair 3Q advertises that their Hair Blower is better than another 2000 W Professional Hair Blower....but fails to advertise the ACTUAL Wattage Rating. User Manual indicates that it is 1875 Watts and will work on a 15 A Electrical Circuit. So it has been INTENTIONALLY designed to work right at the limit of a 15 A Circuit....and they advise NOT operating ANYTHING ELSE on that circuit when operating the Hair Blower [such as a Curling Iron]:
Perhaps this sort of thing should be taught in JUNIOR HIGH SCHOOL as part of their required HEALTH Class. I know that one of my girls was rudely made aware of certain "limitations" when she was a Teenager, forced to run back and forth between her bedroom and the bathroom. And my wife has learned to NOT operate the Microwave, Toaster and Electric Skillet on HIGH
at the same time [Keurig Coffee Maker is on a separate circuit].