ACE2	angiotensin-converting enzyme 2
DMEM	Dulbecco’s modified Eagle’s medium
FBS	foetal bovine serum
FDA	US Food and Drug Administration
GFP	Green Fluorescent Protein
HNEpC	human nasal primary cells
HPMC	hydroxypropyl methylcellulose
HPRT	hypoxanthine phosphoribosyltransferase 1
MOI	multiplicity of infection
MTT	3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide
PBS	phosphate buffered saline
ROS	radical oxygen species
SD	standard deviation
TMPRSS2	transmembrane serine protease 2
TPmix	tocopherol and tocotrienol
UA	usnic acid
Vero E6	African green monkey kidney cell line
VSV	recombinant vesicular stomatitis virus
β-CD	2-hydroxypropyl-beta-cyclodextrin