R600\a (butane \isobutane) fridges safe enough? (toxins or pollutants)

I'm going to buy a new fridge in two days and looking for ones with the safest refrigerant...
Please suggest some other common refrigerants\refrigerators . Must be fluorine free .
Can`t seem to find any but with butane based refrigerants.
Thanks

"Chlorofluorocarbons (CFCs) or freon is the refrigerant in your air conditioner and refrigerator coils. All cancer sufferers
test positive for CFCs in their cancerous organ! I have preliminary evidence that it is CFCs that attract other pollutants–
fiberglass, metals, PCBs–to form a growing tumor instead of allowing their excretion. This would make it a “super carcinogen.”.
How could you detect CFCs leaking in your home? By the time your air conditioner or refrigerator needs recharging,
you have been exposed for a long time. We desperately need an inexpensive, in-home test for this unsuspected killer.
I have not found a single person to be entirely free of it, including persons
without cancer or disease. But in cancer sufferers it is always concentrated in the cancerous organ, and facilitates
the accumulation of other toxins. This makes your refrigerator, if it leaks even microscopically, the top cancer
hazard in the country!
Forane is one of the new refrigerants. Although toxic, at least I observe it in the liver directly, suggesting that your body is
capable of handling it. Remember your new refrigerator will still be using a toxic coolant, and it would be best to keep it outside
or at least vented to the outside. "--Dr. Hulda Clark Tweet