Pettenkofer Memes

Nothing says "I believe in my research" quite like chugging a gallon of suspected cholera water! Max von Pettenkofer, the 19th-century hygiene pioneer, literally drank cholera bacteria to disprove Robert Koch's theory that bacteria alone cause disease. The kicker? He survived with just mild diarrhea because he had partial immunity from previous exposure. Talk about putting your gut where your mouth is! Scientific rivalries used to be so much more... hydrated.