A marinade? Does that mean you will be cooking the item in question after it has steeped for a while?

I don't much care for tequila, either, but I have discovered that if it's far enough away from plain, I can deal with it. I can drink it in a mixed drink if the other ingredients are strong enough, for example. And I would imagine that cooking after marinating would also alter the flavor, perhaps enough to make it palatable to you?

Wish I had more precise ideas on this, but I have yet to cook with anything but wine and beer. :) (Ever put beer in chili? It's awesome.)