Compost Toilets

Compost toilets

//under construction, coming soon!

https://en.wikipedia.org/wiki/Urine_diversion

http://www.ecosanservices.org/pdf/UDD-ToiletsTraining%20material.pdf

Compost toilets are the way to go in terms of solid waste.
Correctly designed, smell can be removed by creating negative pressure in the area under the seat using a solar chimney.

Excellent page detailing techniques and options  @Aselfsufficientlife.com
Decadent compost toilet video  @Youtube
Low tech, more efficient,  greener,  cheaper, less pleasant version @Youtube