Thag was dragged into a Wormcrawl fissure by a spawn of Kyuss. After a quick round of battles with some rot grub swarms, a spawn of Kyuss and a wretch of Kyuss(who are found to be vulnerable to fire), Breach and Lia contracted the “touch of Kyuss” disease. Arkis recalled seeing a cure ritual book upstairs and went to retrieve it. Also a couple books on more obscure religeons was found and quickly scanned for mentions of Kyuss.
The Price of Progress
How to eat fried worms