>>16700248 (OP)>Is there any scientific estimation of the chances of dying of alien diseases on an exoplanet where multicellular organisms thrive?No, we're a sample size of one. As this Anon has said:
>>16700290 everything on this planet is related to each other.
My personal opinion, based on pure speculation, is we should probably assume alien germs, within our own solar system (so Venus, Mars, Europa), could infect us and make us sick. I say this in the capacity that there is a "not zero percent chance" that life in our system shares a common ancestor due to panspermia. I wouldn't extend this disclaimer to other systems, that's just an impossible amount of space to traverse for microbes.