Having been a Govt. Hunter/trapper for over 25+ yrs, and live trapped several hundred skunks,
the ONLY safe method of removing them with no odor is to live trap or shoot them with nothing larger that a 20/22 cal pellet rifle, thru the LUNGS ONLY, 1 shot ONLY.
If you shoot them in the head they will spray, you hit the backbone they will spray,
I will repeat this warning, 1 shot only, THRU THE LUNGS ONLY.
Leave them alone and they will waddle off a short distance and take a dirt nap,
with no spraying, then you can dispose of them. I leave them over night to stiffen up.
If live trapping them, wrap the live trap with black plastic, leave the wrapping long over the in door, to cover the exit door, cut a small slot to stick the live trap handle thru for easy carrying, after closing up the in door, with the plastic ends.
Transport to a moving ditch, tie a rope ti the handle and slowly lower the live trap under water, till ALL bubbles stop showing, wait a couple minutes, then remove the trap, dig a hole and bury the dead skunk.
If you don't use a moving water, you will soon learn why you use MOVING water,
remember oil and water DON'T mix, oil floats on water...YES they will spray under water
ymmv.