On airplanes the parents are told to fit their oxygen mask first in an emergency, as its hard to help your child when you are unconscious. I feel the same applies here.
That doesn't really follow logically. The reason why that's the advice on airplanes is that you can be unconscious for a while (a minute or two?) and not suffer brain damage. Therefore the cost of helping yourself is fairly low. It's not clear that the same dynamic applies to lockdowns.
