If you're going for least amount of smell, water cure.
The buds will have no smell or taste(hardly any) once finished, but will pack the punch.
To water cure, simple trim your freshly harvested buds, then place them all in a cooler(preferably one with a drain at the bottom). Fill the cooler with water, and place something over the buds(most use a block of wood or a ceramic plate) to assure none are floating above the water, they will not need weights on top after the 3-4 day. Change the water once every 24 hours for one week. After the seventh day, hang to dry with a fan blowing. As soon as they're dry they're ready for consumption.
There is no smell whatso ever with this method of curing, except for when you change the water the first 3-4 days.
The way this works is that THC is not water soluble, every thing else(clhorophyl, starches, etc...) is. So once cured and dried, the buds have nearly nothing but THC left. The smoke is extremely smooth when compared to air cured buds. Also, THC does not break down in water like it does in air and light, so more is retained.
P.S.- It's critical that the buds are no exposed to air except for when changing the water. Mold will develop if so. Also, leave the cooler ajar, not covered.
Any questions feel free to ask.