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Originally Posted by Salu
I depends how you define dangerous. As CO2 is heavier than air then it will sink to the floor so would be more dangerous if you were lying on it. The issue with CO2 is that it binds much more easily than O2 to Haemoglobin and will interfere with your abilty to transport oxygen around the body. The normal concentration of CO2 in the air is around 0.38% and if it gets much beyond 0.5% will start to interfere with your O2 transport. As far as I am aware the dry ice I have seen is only used in short bursts which will be harmless providing there is adequate ventilation. There presumably is some regulation around its use in public places?
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Sorry, it was a rhetorical question, I used to lecture on hazardous substances and radiation at the Fire Service College.
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Originally Posted by clarie
But smoking is also a risk for cancer and that would NOT be a quick death.
That's why it's so scary!
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Death does not scare me it comes to us all, in many and various ways, a lot of which I've seen.