I've only ever had four bags of Megazorb and they've just smelt dogdy, got them from farmway online..so maybe it is something to do with storage on their part! :lol:. I don't think it smells so bad when in the cage just cooped up in the bag, though sometimes it can be abit icky in the wee wee district.
Carefresh just smells odourless. I use both though! :lol:
Just Carefresh at my unihouse and Megazorb at my real home.