"You have on more PPE than medical professionals wear when actually caring for patients who have Covid-19. You can dial it back a little," one commenter wrote.
"Safety First NEXT LEVEL [sic]," she posted on Instagram.
In July last year, Campbell posted her extensive flight routine on YouTube. In the video the model uses antibacterial wipes to sanitise the overhead lockers, her seat, tray table, and the TV screen - as well as everything else in reach.
It appears Campbell will not be letting go of her extreme cleaning habits anytime soon.
'"Dettol wipes. Clean everything you touch. Anything you could possibly touch. All this stuff ... anything that you put your hands on," she told viewers in the YouTube video.
"This is what I do on every plane I get on. I do not care what people think of me. It's my health and it makes me feel better.
"I mean as much as I travel, I should get sick so much more with colds and stuff and I'm blessed that I don't, and I really think that this helps me, my little routine."