We all take automotive refrigerant (R-12/R-134) as part of the car. But this stuff can KILL YOU. Found out the hard way. Wife was in the car, AC failed, dumped all the freon into the cabin of the car. She got a big shot of it. 30 minutes later, she is very dizzy, very sick. An hour, she's flat on the floor, throwing up blood. Got her to the ER, they started work. She's home now and recovering. But if we had not got her to the ER, she could have died. You do research, the medical articles say "if...