how DO you glue two fuselage halves together neatly?
Alternative to already mentioned method - hold them together and brush liquid cement over the join. Capillary action draws most of it into the join where it does its work. If you do not use excess amounts it will not run over the top and make any mess but will instead just leave a shiny line no different in texture to surrounding plastic - the stuff not in the joint evaporates pretty quickly.
Flat spin - some of the liquid stuff is fairly inoffensive smell-wise, particularly compared to some of the nastier tube glues.