I did that but I didn't see any screws what so ever. There are however some tabs on the side that look like they may hold the whole thing together, but I was worried they may break off if I try and pry them off without appropriate tools.
Regardless, I went ahead and washed the bin as is. I just hosed down the exterior, the interior, and each of the 12 cyclones through the access on top. Then I set the assembly in front of a forced air portable heater overnight.
Turned out great, the nasty smell is gone