Certain nasal sprays allegedly work by mechanically dislodging infectious agents in the nasal cavity.
Nasal sprays produce nitric oxide, a nano molecule already present in the body, which disrupts the development of a viral load.
The spray would destroy the virus but require a regular application to maintain its effectiveness.
Covid update: Nasal sprays and its effectiveness in helping with COVID-19 (Image: Getty Images)
The buzz regarding the effectiveness of nasal sprays in helping with COVID-19 has seen a virus lab at St Peter s hospital in Surrey announce they were trialling a spray which could kill 99.9 percent of the virus.