omg, i didnt realise there was sooooo much choice

being very new to this camping scene, i have a couple of questions:
an earlier post stated one type of toilet could go a long weekend without needing to be emptied.... is that with no.1's AND no.2's in (soz, trying to be polite here

) ? and, does it begin to smell after a couple of days, especially being in a confined space (apparently i can stink the 'whole' house out on a good day - i cant smell a thing

)? also, do they have to be emptied in a certain place ie where do you empty it if 'rough' camping (when roughing it in the woods, the shovel pictured earlier is all ive used

) ?
sorry if these are newbie questions, but i must admit to being strangely (as one poster put it) enthusiastic about this topic
