What Are Exosomes, Please?

I'm, obviously, trying to avoid the 'flumageddon' topic - So can anyone fill me in on 'exosomes', please - And, then, explain why 'they' are identical (In EVERY fashion) to That, which is being Passed-off as Coronamageddon?

Or, just do your Homework, Realise you're being 'played', and say stuff, coz.. It Matters.

BIGGEST SCAM EVER!

And - You Know it.
Have a lovely Everything, Everyone.