To clarify things here for everyone, Carbon Dioxide is not directly poisonous, no. Neither is Helium, Nitrogen, Nitrous-Oxide, nor many other inert gasses. HOWEVER do you need oxygen to breath. If you were exposed to an environment with a heavy enough concentration of ANY of these gases within a confined space (say like your garage with the door closed), you absolutely do RISK DEATH! You WILL asphyxiate! It is the EXACT same thing as someone cutting off your breathing by choking you. Oxygen can't enter into your bloodstream, and you WILL suffocate. There is no pain, just drowsiness because of your lack of oxygen (same exact reason you yawn) until you pass out and eventually die. This is why when working underground, in mines, and other confined spaces, ventilation is ALWAYS required. Sewer gas isn't going to kill you. You drive over a manhole or by a storm gutter and smell that nasty stench, but you still live. Now say if you were to enter into that same sewer where there is no oxygen available to breath, yeah, you're gonna die. Perfect example: http://tinyurl.com/4nwzfl Stay safe! Whenever working on a vehicle, running a vehicle, or working with chemicals, ALWAYS remain in a well ventilated area! -Robert vin 6585 "X" --- In dmcnews@xxxxxxxxxxxxxxx, Martin Gutkowski <martin@...> wrote: > > David Teitelbaum wrote: > > >You think CO2 is not poisonous? > > > > I know it's not poisonous - you and I breath it out every couple of > seconds, it's emitted by plants during respiration, it's one of the > building blocks of life. It's NOT a pollutant, despite what the > environmentalists will have you believe. It is also not odourless in > high concentrations (like the top of a freshly poured glass of fizzy > drink, or a fire extinguisher). What you're talking about is simple lack > of oxygen, not the effect of CO2 - and you would most likely wake up in > that unlikely event. > > Carbon monoxide is very, very poisonous and has the effect of replacing > oxygen in the bloodstream, IIRC. A person inhaling it in their sleep > will never know because it causes unconsciosness. > > I'm not arguing against responsible use of CO alarms, but CO2 is not a > dangerous gas, and a car equipped with a cat will emit only tiny amounts > of CO. Try putting a CO meter up the exhaust of a DeLorean with a cat, > and see how much it reads. I regularly work with de-catted DeLoreans and > adjust the mixture using my CO meter, which should be 1% for a lambda > equipped engine and 1.5-2% CO for a B28E metering equipped engine > (popular over here for the added performance). > > Martin > > > > [Non-text portions of this message have been removed] > ------------------------------------ To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnewsYahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/dmcnews/join (Yahoo! ID required) <*> To change settings via email: mailto:dmcnews-digest@xxxxxxxxxxxxxxx mailto:dmcnews-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/