CO Bans Personal Air Purifiers on All Aircraft=0AEffective Immediately, CO = has banned all battery-operated personal air purifiers from being used onbo= ard CO aircraft at any time. The customer may not use the personal air pur= ifier onboard while the aircraft is parked at the gate, during taxi, take-o= ff, enroute to his/her destination, or upon landing. Once the customer has= deplaned the aircraft, he/she may then use the personal air purifier. Thi= s policy has been mandated by CO and should not be confused with items proh= ibited onboard the aircraft by the TSA.