Its dangerous. It has killed billions of people throught the course of history. It is a dangerous substance that contains up to hundreds of toxic chemical compounds. It contains such chemicals as chlorine gas, ammonia, argon, carbon monoxide, ozone, carbon dioxide. This carcinogen-containing substance can cause cancer in a large percentage of people. IT has also been linked to the poisoning of entire schools of fish, and will literally decompose and break apart some marine life forms. This is a dangerous thing, and YOU must be afraid of it. Its air. Funny how adjectives and big words along with a very vague topic can go a long way. My warning (which I'm sure most of GC already knows) is to not believe everything you read. Use your head, come up with your own judgement.