I actually agree with what you said. What I mean is that the "nearly-impossible-to-clean toxic gas" is also "nearly-impossible-to-see" when in the air. See, t

I actually agree with what you said. What I mean is that the "nearly-impossible-to-clean toxic gas" is also "nearly-impossible-to-see" when in the air. See, that's why they're not banned, because people "Don't see" the problem. If cars needs to take a sold mass smelly hot dump every few miles too, they were long banned.