Why does it make an annoying squeezy sound when I open the left door?

Hello Silvana,

Personally
I believe you are listening to the sound of... BIG SAVINGS.

Very cool...!!

I suspect DON'T live at the South Pole nor Fargo in winter
I'm thinking you have an enviably GREAT door SEAL.

Because a proper seal (which, I THINK, you have) maintains a
really GREAT DIFFERENCE between the inside and outside air.

The greater the TEMPERATURE difference the louder the sound.

With good clean contact (NEW magnetic edge) ... you are hearing the cold air dropping out the bottom... room air rushing in... and if you are really lucky... a newly created vacuum trying to suck your door back closed...

You might want to double check your temperature settings... with a ($6 to $10) REFRIGERATOR/FREEZER THERMOMETER(s) noted below...
but I'm thinking the "squeezy sound" is MONEY in the BANK.

Be proud.... (but verify).

Comment me back if that sound is NOT a little more pleasing.