Can't get it up? Blame the car exhaust!

[MillCreek]

https://www.dailymail.co.uk/health/article-6664915/Men-live-main-road-likely-struggle-erection.html

I love the smell of car exhaust in the morning. It smells like victory.

[MechAg94]

They didn't really mention specific air contaminants except for small particulates mentioned down lower.  Be nice if they narrowed that down. 

[Ben]

I think I'm up to a 95% success rate on guessing Millcreek threads by title alone. 

[MillCreek]

I think I'm up to a 95% success rate on guessing Millcreek threads by title alone. 

I try to think of snappy titles.  For example, when Harry Potter was popular, my risk management lectures were titled like 'Harry Potter and the Order of Subpoena' or 'Harry Potter and the Half-Blood Loss', or 'Harry Potter and the Gall Stone'.