Unless you prove it, a substance is not toxic. So the bias is always on the side of "it's not bad" until we prove it actually is. So what I do to start with is

Unless you prove it, a substance is not toxic. So the bias is always on the side of "it's not bad" until we prove it actually is. So what I do to start with is as long as it doesnt smell safe (you gota judgement call on this), then it isnt. Our body is crafted to defend itself it's as simple as that.