That's an old beliefs we don't need to follow what is  wrong  to what theythink ,it's just self claim antidote  which is we know it's not. This is also their first time to experience this kind of situation so don't believe that they know everything about this sickness. The last time we have a pandemic is more than 100 years ago and it's happen before they even born so why give suggestions that they know that it's not 100% accurate.