I have an Amana ARB2217CW, bottom freezer unit. It's in the garage. Without going into details...there's a strong odor in there, and I need to get rid of it.

In the refrigerator compartment there are two air ducts in the bottom/floor at the back. On of them appears to have some crud in it...maybe some baking soda and dried meat juices/ blood. I am concerned that stuff could be holding on to the odor. I can't find any blown-up diagrams online that show those ducts. Are they removable/cleanable? Is it a job that could be DIY for somebody with time to do it?

Anywhere that I can find a blow-up of those sections of teh fridge?

Thanks.