A couple of helpful hints:

Avoid mixing urine with feces. Defecate in one spot and urinate in a separate container. Urine can be dumped in a garden or any absorbent soil with few consequences. Excluding urine lowers the weight of the waste by better than half, cuts the smell and makes handling a lot easier because your not dealing with a liquid.

Defecate into an absorbent material and add more of this material over top to control the smell. You can loosely place a top over this but make sure air can get to it. The material can be sawdust, peat moss (my favorite, cheap at any home center and it comes in easily handled compressed blocks), shredded newspaper, or leaves that have been run through a chipper, dried and bagged.

Avoid sealing your solid waste into a bag or container if at all possible. Feces that are suspended in a dry material and expose to air dry out and don't stink. After a day or two they smell more like rich soil. The types of bacteria that flourish in a sealed container, anaerobic, make the most pungent, lingering and nauseating smells imaginable. The term 'gag a maggot' comes to mind.

Don't douse your feces in bleach or formaldehyde (the funky blue chemical toilet stuff) or perfumes. It just makes it smell worse in the long run. Feces and perfume combined has much the same cloying sickly-sweet smell as a rotting body.

Starting with a five gallon bucket and a couple of inches of peat moss in the bottom you can plan on fitting about at least a dozen average deposits with a layer of absorbent material over each.

Have a couple of these setups. When full you should bury the contents. That option exclude by circumstances you can store the container for a few days for the contents to 'mellow' and all excess water to evaporate. Once completely dry, and assuming it is kept dry, it can be bagged and sealed for weeks without it becoming putrid. It should be buried when the opportunity presents itself. When you bury it remove the plastic bags no nature can get to it.