[sbrass]

As already stated by the other commenters, the author had already submitted the paper to arXiv in mid of March. So, I don't think that it falls in anyway under April's fool (and I don't think that in this serious situation any researcher should do a April's fool paper).

Back to its contents, the authors describe the potential destructive action of alcohol on SARS-CoV-2 and its possible application in the respiratory tract, thus, nose, nasal cavity and further. He bases his ansatz on a theoretical approach on diffusing the alcohol from a alcoholic vapor in to the respiratory system. However, as theoretical it may sound, I think it could prove usable, if it is done in a controlled way and may deliver a simple approach to help infected people and saving those.

[rurban]

The usual approach is to use salt, not alcohol. The virus does indeed not like alcohol based sanitizers, but then all respiratory virus illnesses would be treatable with that, and the common treatment is with saltwater. I just got a small tinnitus, which looks like a cold, and for sure I'll be treating it with salt, not whiskey