Mine’s not smelly. Like others have said, I use glass containers for leftovers etc, and I also wash and store like lettuce and veggies in ziplock plastic bags. I probably deep clean mine a couple times per year… definitely spot clean if there are spills etc.
If you have any odors you could try putting a box of baking soda in your fridge to absorb them. They actually sell fridge boxes of them with side panels that are mesh and easy to use.
Not really asking because I am affected. I just used to go out with someone who had a very smelly fridge full of meats and cheeses. I wanted to know if this is something a lot of people do.
Normally, my own fridge doesn't smell though. The last time I had any kind of smell, there were a few rotting limes somewhere in the back, and that produced a weird chemical odor which started clinging to dairy products. Finding and eradicating that took a while.
That person must've spilled something and not cleaned it up. Normally, as you've seen, if you use containers and bags to store stuff it shouldn't be a problem.
Closed containers are easier to store, if something goes off it doesn't affect the other stuff next to it. Imagine having mold spores going from one cheese to another to different kinds of deli meats just because you didn't keep them in closed containers or ziploc bags.
Second. If something is naturally smelly it will usually impart smell on other things nearby.
Imagine having a really smelly cheese right next to a gouda. The gouda will take on the smelly cheese and everything in the fridge will now smell like smelly cheese.
Plastics also takes on smells really fast. So even if you remove all those cheeses and meats that smell or put them in locked containers then the fridge will still smell.
I keep tons of meat and cheese in the fridge, and the only time it smelled was when the MIL spilled milk in it and neither cleaned it up nor told someone about it so the more able bodied could take care of it.