What's that Smell?

This time of year, the vent for my vehicle's climate control always switches to outside air without my permission.  Some foul odor from outside gives it away, at which point it's too late to keep the stink out.  The only choices to get rid of it is to quickly hit the 'recirculate' button, and hope to ride it out, or to open the window and pray that you've already passed what caused the stench.

Riding the motorcycle, back in the day, there were a lot of smells.  They typically passed quickly and didn't seem as intense.  Maybe it was olfactory fatigue.

Now, when I pass something stinky on the highway, it's way more alarming in my car, if that outside vent is open, than it was on my bike.  PEW!!!