Their article: https://writetobrain.com/olfactory

In the end, our headset got a bit hacky: It ended up having a knife taped to the probe for mechanical support. At the time, all of our headsets had a knife taped to the probe, as untaping the knife lead to software errors.

I'm sorry what

you could reasonably encode the meaning of a paragraph into a 400-dimensional vector. If you had a device which allows for this kind of writing, you could learn to associate the input patterns with their corresponding meanings. After that, you could directly smell the latent space. A bit of ultrasound, a breath in - and you understood a paragraph.

I smell kung fu.

Im sure prolonged use is good for the brain

I wonder if this could work on people without senses of smell

VR porn with realistic smell incoming.