Thank you once again Dr.  Here is the full link to the Forbes article.
https://www.forbes.com/sites/leahbinder/2019/10/17/harvard-researcher-says-this-inexpensive-action-will-lower-hospital-infection-rates-and-protect-us-for-the-flu-season/#199b69941824

Hi @TK no problem! The short answer to this question is that I'm not sure, there does not appear to be any summative research with a definitive conclusion on this. While her own preliminary work is certainly suggestive, more studies need to be done to evaluate whether her findings are reproducible in different environments such as our own, as well as different infectious agents that transmit by means other than inhalation of respiratory droplets, such as direct contact. More about the need for more evidence about environments in a recent review here (https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6364647/) and about different infectious agents here (https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0199579).