Medical Body Inflation.

Tissue expanders usually use saline inflated implants to create skin sections for cosmentic surgery.  This company proposes using CO2.  Further, the amount of C02 is patient controllable.  One can hope they make breast or other implants some day.  I'd love to see CO2 breast implants used to make huge breasts that didn't cause back problems.  https://www.massdevice.com/airxpanders-aeroform-tissue-expander-transforms-decades-old-procedure/