Stumbled upon this old thread and happy you were interested in Feelreal Mask back in 2016. Now we're actually going on Kickstarter with the new version, and I can answer all your questions about the gadget.
The Mask is equipped with a reliable scent generator, which has 9 slots for aroma capsules. You can choose the capsules from our vast library of 255 smells. Our scented liquids are safe for user's health and they are similar to natural aromas used in food industry.
Virtual reality will feel so real... ...with Feelreal ❤️