uh, that’s nonsense.

co2 is problematic because of concentration - the sheer volume.

leaded gas and mercury are a problem because of bio-concentration.

dilution still helps!

Of course it helps, but where are you going to dilute more co2 these days?

	▲	lazide 8 minutes ago \| parent [-]
		that is exactly the issue. still worse 6” from the tailpipe.

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