Dental Tribune, the European blog of dentists published a post on the possible application of cyclodextrins as a mouth rinse to prevent viral infections comparing cyclodextrins in mouth washing to soap in hand washing. It can be learned from the post that using cyclodextrins as a broad-spectrum antiviral is one of the ways oral care products can help with the prevention and treatment of viral infections in dental offices. The following scheme helps the dentists to understand the mechanism:

This paper of Roquette on the potential use of HPBCD is suggested as a background material:
Combating Coronavirus: Key Role of Cyclodextrins in Treatment and Prevention