When I used aquarium silicone, I would put it ont he inside and outside of the bottle cap, for it didn't hold very well. I would let it dry completely as the directions say to do. I suppose the fumes are bad, it does smell a lot. At least until it is dry.
When I use the Liquid Nails, I use it on the outside of the bottle cap, it holds, even when used on a cap that is under pressure and leaking.