wrote in message
...
On Feb 14, 9:35 pm, Spartakus wrote:

That's a lie, too. A gas does not have to be poisonous to be
considered a pollutant.

ø However we need alk the CO2 we can get — it
is essential for all life on the planet

But in sufficient quantities (something like
600 ppm), CO2 *is* bad for you. We're averaging something like 370
ppm now, probably a lot more in urban areas. Feeling lucky, punk?

ø According to the US Navy submarine service
1200 ppm becomes a danger zone.

Just a warning setpoint. The military puts safety points as low as
reasonably achievable.
There is no danger at all at 1200 ppm. There is no danger at 5000 ppm, and
no one would ever notice anything until 10000 ppm, and thats only a few
people exercising.