Ha! You guys are cracking me up! BobArrgh, your post / username combo is especially making me giggle
In all seriousness (well, in whatever amount of seriousness can actually be mustered up for this particular subject), no, I wasn’t driving past anything that would be producing said stench; though I have driven past both a waste center and a paper mill in my time, and yes, they do indeed reek.
So, no one else has experienced this? I think I might even be more interested in how common an occurrence it is than the why of the thing. I don’t recall it ever happening when riding in a car as a child with my parents or whatever. I first started noticing it when I was a teenager “riding in cars with boys” as it were. That’s why I mentioned that part in the OP; not to be dissin’ the mens, but it never seems to have happened when riding with my girlfriends.