Originally Posted by
UnoriginalGuy
I find "Poisonous chemical" to be too vague... Since one might argue that table salt, most bathroom products, batteries, etc could be poisonous if consumed or consumed in excess.
Yeah. Poison is a matter of degree.
In sufficient quantity oxygen is toxic. Must we enter with empty lungs?? (I've never heard of anyone dying from too much oxygen but that's because it's pretty hard to do unless you're in more than normal atmospheric pressure and scuba divers breathing things other than plain air know what not to do. Go deep enough and there's *NO* gas that isn't toxic. (The limits on how deep you can go are due to this, not due to the pressure.)
More realistic: There are plenty of travelers with bottles of rat poison. It's a commonly-used blood thinner.