In reply to LeeWood:
They should maybe think about taking tobacco off the shelves during the quarantine to try and give people's lungs a chance to improve. Maybe alcohol and sweets as well if there's a real issue.
Other interesting thing is some people believe reason it is so bad in Italy is heavy air pollution with particulates. If we lock down for a couple of months there will be far less diesel vehicles moving and maybe our lungs will be in a better condition. Also, lockdown will knock back other cold and flu infections as a side effect.
We could be combining lock down with restricting unhealthy things reaching shops, maybe issuing vitamins or supplements and trying to get population as healthy as possible.