Deersled, are you sure you scraped the inside of the hide well, removing all the membrane? Did you grain the hide, scraping all the outer membrane off the hair side of the hide? Last summer, I was working on 5 hides at a time. I picked 2 of the better ones to egg tan. One turned out well. The first one turned out well. The second, I got busy and ended up taking it on a camping trip with me wife and 6 other friend. Well, it smelled like bloated road kill at our campsite. In my haste, I forgot to do the final scraping/grain. PEWWEE!