“Why Face Masks Don’t Work: A Revealing Review” was written by John Hardie, BDS, MSc, PhD, FRCDC and was accepted by "Oral Health of Canada," October 18, 2016, but then removed from the site in 2020 with the following cryptic rationale, "If you are looking for “Why Face Masks Don’t Work: A Revealing Review” by John Hardie, BDS, MSc, PhD, FRCDC, it has been removed. The content was published in 2016 and is no longer relevant in our current climate. Please note that the content from Oral Health Group is primarily intended to educate and inform dental professionals.”