I think it may work... probably it wont be much efficient, but if you drink it with an empty stomach you may get reasonably high.

Heating weed in the microwave does make a bit of smell, but its very different from the burnt weed smell (tha one which is very easily noticeable and recognizable)... im pretty sure the microwaved weeds smell only can be recognized by smokers...

Anyway... i think milk and fat can be a bit messy in the microwave... if you have some cheese and bread/crackers, make firecrackers... just put the finely ground weed between two (or more) large slices of cheese, put them between two (or more) slices of bread (or crackers) and heat them until the cheese melt.

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"Everything we do, everything we are, rests on our personal power. If we have enough of it, one word uttered to us might be sufficient to change the course of our lives. But if we don't have enough personal power, the most magnificent piece of wisdom can be revealed to us and that revelation won't make a damn bit of difference." Don Juan Matus - Tales of Power