PTO Essential Oil Personal Inhaler for Aromatherapy - Set of 12 with Cotton Wicks to add Your own Oils and Blends

I got these for a particular "fragrance" used for adult purposes--poppers, which are volatile and can damage skin if spilled. This keeps that spill from happening, and they work to a certain extent, though the poppers lose potency quickly. The cotton wicks on these absorb enough to be effective, and they seal tightly enough to keep them working for an hour or so, long enough generally for a single session. They are refillable, with some difficulty, using a knife blade to pry the cylinders apart, and you get a reasonable supply of them.

They work very well. I also read reviews from people who said once the cap gets put on, it is impossible to get off, making this a one time use only item. Being curious, I put a cap on one and did the same thing I do for McCormick salt and pepper grinders. I put it in very warm water for about 10 minutes and was able to get the cap off easy with a small blade screwdriver. The manufacturer won't like this, but it makes them reusable (good for us).