The research was carried out by scientists from the University of Haifa and the University of Virginia.
Jonathan Ball, a University of Nottingham scientist said the study showed “the use of nose inhaler provided a physical, and maybe also a chemical barrier.”
But he stressed he was not a complete protection from the virus.
Dalia Megiddo, from Nasus Pharma agreed, saying the study was “not a replacement for masks or social isolation.”
She also added that the 83 people who used the spray - out of 243 people approached - may have been more diligent about hygiene anyway.