Amana fridge-nasty odour

We have a 2 year old Amana fridge, bottom drawer freezer. It has already had a new compressor. for the past few weeks, the temperature has been fluctuating, and on Monday it quit altogether and there is a really nasty burnt odor emanating from the freezer drawer. It has permeated most of the food (unless it was double wrapped). The repairman believes the problem was a burnt out thermostat, and replaced it. I scrubbed the interior with baking soda and he poured baking soda/hot water over the condenser coils. It appears to be working now, but there is still a pretty strong odour in the fridge part. He suggested I get something called Ozium, as well as Refridgerator Mates (made from coconut husk) and leave it over the weekend. Any other suggestions? Will we get the odour out?

Here I bought Maytag because I believed all the commercials, and we've had more problems in 2 years with this fridge than in 20 years with our 2 older fridges (and our main freezer is over 30 years old!) (touch wood). It doesnt' sound like we'll get much help from Whirlpool now that they've taken over.

Sharon welcome here

In my eyes today's products look and seem more efficient but I find the oldfashioned products way more reliable. That goes for about everything including hitech components that control products and so easily mess up.

Did the technician check the insulation? (if drips of meat or other edibles have found their way there no odour deodorizer will work).