Corky Scott wrote:

...

I was just impressed that anyone would inhale the stuff.


I'm impressed also, and not favorably. Although CFC refrigerant
itself is non-toxic, like air from a shop compressor it usually
contains trace contamination by lubricants making it dangerous
to inhale.

Ditto for helium sold to inflate balloons. Sure, you can make
your voice sound funny but you can get chemical pnemonia too.

--

FF