Frozen crab thawed in our refridgerator and juice ran everywhere - now
it sticks.  How can we get the smell out?  Tried baking soda, total
cleaning, wet newspapers.

Be careful, but you may need vinegar.  However, it may discolour your
fridge, so check the manufacturer's cautions.

I would defrost, then use some soapy water then dilute vinegar, clean
soapy water then clean neat water.  Dry then restart system.

You can't beat diluted lemon juice for an excellent odor eliminator.

tutuzdad-ga

Perhaps you could try putting some charcoal in the back, that's
another smell absorber like baking soda. Maybe you've missed the drain
pan for water, as it may also retain odors from water coming from the
ref. Also, if the ref's insulation was wet with the crab-odored
liquid, the odor may stick for good, so you may have to replace the
insulation.

I am sure that you have cleaned the fridge properly and any antibac
substance should take care of the smell. The odour is more likely to
be coming from the liquid drainage pipe that can be missed or too hard
to clean properly.

Try squirting vinegar or antibacterial detergent into the hole until
it comes through onto the floor.

Also check underneath the fridge as crab juice may have created a
smelly pool where the overflow pipe ends.