Keatah

1. Not
2. Not

Yes and yes because immune system training. At least virologists say so.

Some say yes, some say no.

I ain't sharing no ones boogers!

I don't suggest we eat our own boogers!

I don't suggest any adults do either practice!

The mucus traps lots of stuff, only dried out old boogers contain weakened bacteria and virion that can act as a sort of vaccination. 'Dig deeper' most of us don't have sufficiently aged boogers to eat...

I bet this sort of thing is being delivered piecemeal like so many other oddities through digital media, soon it will hit television etc etc....

Best practice to date is not to eat boogers and snot... they aren't lab quality specimens with just what we want in them, they contain lot's of contaminants and other goodies we don't want.