Do you have roommates though?
On a more serious note assuming that isn't your problem be extremely careful when reconstituting your vial or you may wind up with a solution that varies drastically in potency. If memory serves those little "sweet breath" vials take about 2.7mL for 100 drops, but it's been a long time and that might even vary per brand. If it is a different kind of vial the number may be completely different. If you don't have a vial exactly like it then determining the "drop factor," as it is called, experimentally, isn't going to be possible either. You'll have to proceed with great caution. You'll be able to measure out a dose with a syringe or something, sure, but as far as drops go, if the best you have is trial and error, that's a bit of a problem (I've gotten way more LSD than I bargained for just "washing" vials that seemed to be finished, let alone ones where the solution evaporated.)
For future reference LSD tartrate dissolves just fine in water and water solution is more stable than EtOH (vodka will be somewhere in between.) For this reason dissolving in EtOH is actually preferable for laying blotter whereas dissolving in water or a lower % solution of alcohol is preferable for laying vials (the concern about mold is probably overblown if you aren't keeping them a long time and are doing so in a sanitary place. Refrigeration might not be strictly necessary in a moderate climate, either. Keeping out of light is more important.)