Only way I can think of is to not have your FB account linked to your Oculus account. that, or sign out and make them use their own FB account. But that currently (I think) means wiping the system each time.
No, if your FP and Oculus accounts are linked. Just ask others to avoid using your FB account. Otherwise, do not let them use it.
Custom built gaming desktop; i9 9900k (water cooled) oc to 5ghz, gtx 1080 ti, 32 gb 3000hz ram, 1 tb ssd, 4 tb hdd. Asus ROG Maximus xi hero wifi mb, StarTech 4 port/4 controller sata powered usb3.0 pcie card, PCI-E PCI Express to USB 3.1 Gen 2 card, Asus VG248QE 1080p 144hz gaming monitor, Oculus Rift cv1 w/2x sensors, Vive Pro w/2.0 base stations/Index controllers, Quest 1 w/Link and VD wireless (good/close 5Ghz wifi and PC with Ethernet cable to my Router).
Answers
Custom built gaming desktop; i9 9900k (water cooled) oc to 5ghz, gtx 1080 ti, 32 gb 3000hz ram, 1 tb ssd, 4 tb hdd. Asus ROG Maximus xi hero wifi mb, StarTech 4 port/4 controller sata powered usb3.0 pcie card, PCI-E PCI Express to USB 3.1 Gen 2 card, Asus VG248QE 1080p 144hz gaming monitor, Oculus Rift cv1 w/2x sensors, Vive Pro w/2.0 base stations/Index controllers, Quest 1 w/Link and VD wireless (good/close 5Ghz wifi and PC with Ethernet cable to my Router).