I don't put anything past 2020 any more. Jokes aside, If there is any life on other celestial bodies, I wonder if there will be diseases that we carry/they hav

I don't put anything past 2020 any more. Jokes aside, If there is any life on other celestial bodies, I wonder if there will be diseases that we carry/they have that would prove destructive to us/them. Or perhaps the biology would be different enough that there wouldn't be a risk.