I guess OP was alluding to diseases caused by bad protein: https://en.wikipedia.org/wiki/Prion#Prion_diseases_and_their_transmission_properties https://en.wikip

I guess OP was alluding to diseases caused by bad protein: https://en.wikipedia.org/wiki/Prion#Prion_diseases_and_their_transmission_properties https://en.wikipedia.org/wiki/Prion#Prion_diseases_and_their... A well known example is mad cow disease.