Warning about Guerlain Bee Bottles
Just use some ptfe plumbers tape on the threads.
Are those the bottles that are similar to the Aqua Allegoria bottles? I've bee having some issues with my Aqua Allegoria bottle. To be fair I've had it for two years now (I've used about a third), but the atomizer is wiggly, the gold paint from the cap is chipping off. There is also dark green fluid underneath the cap, all around the rims of the atomizer. I think it's just the chipped paint mixing with some perfume that leaked from the atomizer, it also just smells like perfume, it looks like moldy perfume. The perfume itself is still fine though, it's just that I have to wipe the atomizer before every use.
I haven't had issues with the Aqua Allegoria bottles yet. It seems to be an issue with the bee bottles. But I guess the Aqua Allegoria bottles might be screw top too, in which case you should check. If it is wet around the sprayer where you are wiping the atomizer it could be that the perfume is evaporating. Maybe you should consider decanting it into a different atomizer bottle. I put plumbers' tape around the assembly, and I took a black marker and marked the level in the bottle to see if it goes down. If it does, then I know it is still evaporating, and I will decant it to another bottle.