This is what I do.

Weed on top of a cracker, cheese over that (alot), and then put it in the microwave for 5 seconds, or until the cheese bubbles.

It works and I still get high. You don't need to heat weed up to eat it, but it's faster if you do. And no, it won't make your microwave smell. Maybe spray a bit of the kitchen with lysol, but noone in my family has ever noticed.