And prions are for some reason really hard to kill. Autoclaving only &quot;somewhat&quot; deactivates them.<p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Prion#Sterilization" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Prion#Sterilization</a>