This is the second sneezy episode of the Try Guy's Podcast, but the first one was inducing in response to reading a letter from a person with a sneezekink.
This one was in response to a cat allergy.
Eugene sneezes twice, once at 2:55 and one at 1 hr, 3 minutes in. The build up for the first one was pretty good, but the build up for the second one was amazing! And both of them had sneezy discussion after (apparently this came about from taking his dogs to the vet, and he is allergic to cats). The first post-sneeze discussion was about if he was ok, Ned is also allergic to cats, things like that. The second was about how he is usually a very loud sneezer and feels the need to hold them back. "Scream sneezes," as they are dubbed.
Lastly, Zach sneezes at 1:08:08. The joke here was that Eugene had interrupted Keith trying to talk, so Keith had pretended to sneeze to interrupt Miles. So when Zach sneezed he said "this was real!"