My suggestion for shielding yourself from Covid19:
Buy some bulk BHT
https://www.myworldhut.com/products/BHT-%28Butylated-Hydroxytoluene%29-Powder-Food%252dGrade-Antioxidant-Bulk.html
Dissolve it 5% by weight in hot (~70C) olive or other vegetable oil.
Take 1 tsp of oil twice a day (morning and evening).
The BHT inhibits the replication of all lipid-coated viruses. If you get exposed to the virus it won’t be able to reproduce enough to make you sick, but your immune system should still be able to develop immunity from the viral presence.
Ok, adding to my “get this” list, thanks!