Anyone getting a sulpher smell from your cats?

I'm running 93 (winter blend) and have been getting some stinky sulphur smell from the car, assuming it's the cats. Watching and reading enough, I'm wondering if I'm getting old gas.

I have no close Shell stations, or even ones mentioned as Top Tier. Currently running a tank-full of Techron through my 550.

Winter crap gas, or something that needs to be checked out? If the cats don't start smelling better, I'm switching to dogs--sorry, bad jokes.

Reminds me of a Mitsu Eclipse GST that I had in college. If I ran BP through it, it stunk. I'm wondering if I'm getting old gas. Noticed this through about the last 4 tanks.

I didn't have this problem with a bit of stink during spring/summer/winter from the same gas 93 oct. source.

Thanks in advance.

I'm currently running mostly COSCTO 93 octane, and I do occasionally get a sulferish smell. Can't be old gas, as Costco sells tons of the stuff.

My cat currently has a UTI, but I don't think the two are related.

Try another brand of food..sorry couldn't resist.

The only thing I ever got from cats was the occasional dead rodent dropped at my feet.