Re: Disgusted
It's very obvious if I go out for an early morning run (4:30ish) before things have got moving. Overnight the quiet roads have become cleaner as the breeze has wafted away the miasma, and I can tell a diesel or petrol car passing by the stink of the diesel. Later when the roads are busy it all merges into one stench and I stop noticing it.
Modern petrol cars don't normally stink much, but if a classic petrol car passes then there is a mighty stench of emissions that takes me back to my childhood days when there were manual chokes, no catalytic converters and carburettors were usually badly set up.