Get rid of smell in bong?

I'm currently watching over my neighbors house and a friend was nice enough to hook me up with a bowl or two of weed today because since I quit for awhile I had none. Well its not enough for a joint and I have NOTHING to smoke out of and fuck anything with alluminum so I'm pndering whether or not I should use my neighbors bong. I know he smokes weed but that things smells as though it hasn't been used in awhile and I smell no weed. So if i were to use it what could I do to get rid of the weed smell by monday?

Well if he smokes weed wouldn't he have other pieces lying around? Ones that he uses? Instead of just 1 unused bong?

Waterfall bongs, and gravity bongs are great. Although, if you don't have something good to use for a bowl, it can be kind of hard w/o aluminum.

You could try doing the old knife trick. Heat 2 butter knives, the ends, not the handles over an open flame. Range tops work well for this, even cheap old coil ranges will do for a flame. Take somekind of bottle, like a 1 liter with the bottom part cut off, to act as a funnel (if you had a funnel, you would hold it upside down). Now when the knives are hot, squeeze the bud in between the hot ends of the the 2 knives, like tweezers. Use the bottle over the bud to catch the smoke, and inhale.