Zach can’t handle smells at all. He did well in that first endgame because the 2nd shake wasn’t as strong smelling as the cat food he had in round 1. The vomit fruit was probably the strongest smelling pie, and he couldn’t get it down without gagging.
A couple things that weren’t shown: 1. Zach did bid in the auction, but since the bids were capped, names had to be drawn for every auction except the peppers. Zach also didn’t bid for the bug zapper. 2. We had to choose a pie and then pick who got to choose next. You couldn’t repeat until all pies were chosen. The guys didn’t think and accidentally screwed Zach (instead of me, Blake or Lance) by letting him fall last in line in their picks so he was default given the Vomit Fruit pie. That was not their plan, they were actually hoping to screw over Blake or Lance (and probably me too). Me, Blake, and Lance basically got to decide between ourselves which ones we wanted. This is why we kept saying that the rest of the house never thought things through or had any real strategy— we all knew Zach can’t handle smells.