OVR Technology is a company that provides a scent emitter for virtual reality. Its product consists of a small add-on, called ION, that can be attached to the lower part of VR headsets thanks to some velcro straps that go all around the device and that can emit little particles of perfume to let you smell in virtual reality. ION is battery-powered and can be controlled via Wi-fi, USB, or Bluetooth.
It contains 9 cartridges of smells, and it can emit bursts of perfume in an optimal way: according to the company, its patented technology allows for .1 millisecond bursts of scent and can change between scents in 20 milliseconds. It seems that OVR studied a lot about how to emit perfumes in the best way possible to offer a realistic sensory experience to its users.
More information:
https://skarredghost.com/2021/11/16/ovr-technology-hands-on-review-2/