The things we are discussing about 5-HT2 antagonists and plasma serotonin, about attempting to halt progression in the early severe stage, are relevant *during* these events.
Rates of PTSD following survival from severe COVID-19 exceed 30%, ditto anxiety and depression.
The ventilator settings required to keep these patients alive tend to permit blood CO2 levels to rise somewhat, in avoiding excessive mechanical damage to the lungs.
This has been repeatedly demonstrated to cause severe anxiety and promote PTSD.
@HenkPoley This paper indicated that a single exposure to 70% ethanol largely preserved filtration efficacy, comparable to dry heat or UV sanitizing. However, further exposure events gradually worsened filtration efficacy.
Theoretical justification arises from the fact that endosomal entry is of only secondary importance for SARS-CoV-2 replication in the respiratory tract.
Both TMPRSS (proteases at the cell membrane) and cathepsins (proteases in endosomes) must be blocked.