Hi Fuzzy,
Decoration being my husbands business I can say Dulux water based Interior paints are perfectly safe (all their Interior range is waterbased/acrylic). and it actually does not smell that bad and the smell disappears very quickly, if lets say you decorate today you can safely use the room the next day.
I can see you only have few days to go. Wish you all the best.
Eli
Just to add, I would recommend the 'Diamond Eggshell Finish' as it is easy to clean off those little hand stains from the walls afterwards