No codes, but fuel smell inside cabin during driving.

[geosnooker2000]

I noticed it for the first time Saturday evening, and then I had to endure it on a 5 hour trip back home yesterday (Sunday). I payed special attention to myself re: headaches, dizziness, nausea, sleepiness, etc. on the drive home, but nothing other than being road-weary the last 30 minutes, so I don't think it was accompanied by CO. I was wondering about a too rich condition, but I got 20 mpg on the trip home, plus... again, no codes.
Currently there is 172K on this thing with what seems like a tanny solenoid losing its effectiveness in 2nd gear (been noticing this for about the last 6 months), but that's about it... other than a key fob that stopped working a week ago that a fresh battery did not fix. Any ideas?

 

[geosnooker2000]

I noticed it for the first time Saturday evening, and then I had to endure it on a 5 hour trip back home yesterday (Sunday). I payed special attention to myself re: headaches, dizziness, nausea, sleepiness, etc. on the drive home, but nothing other than being road-weary the last 30 minutes, so I don't think it was accompanied by CO. I was wondering about a too rich condition, but I got 20 mpg on the trip home, plus... again, no codes.
Currently there is 172K on this thing with what seems like a tanny solenoid losing its effectiveness in 2nd gear (been noticing this for about the last 6 months), but that's about it... other than a key fob that stopped working a week ago that a fresh battery did not fix. Any ideas?

I should clarify... When I say "no codes", what I should have said was "no CEL". I haven't plugged in a reader.