Re: What fraction of a gram ? @Duncan
Horse manure might smell a bit, and possibly contains some nasties if you poke your nose too close to it, but combustion engine emissions definitely contain nasty pollutants and are worse for your health and the wider environment, not better!
It's the handling of it that's the issue. If you handle it with your bare hands then go and prepare food that you eat raw (eg make a PB&J sammy) you'll have issues. Maybe if you're around it unmasked as well.
But if you wear gloves and/or wash your hands, you won't have any issues whatsoever. We can't do that with vehicle emissions - those fine particles get everywhere regardless of whether or not we see them.
Biting the hand that feeds IT
