Plant matter vapor is visible under the right lighting, it looks and behaves similarly to a very light smoke or mist. It is possible to blow vapor rings, but your vapor from vaporizing will never be thick like the e-juice vapes. Visually, it can be compared to seeing your breath on a cool night, with the exhaled vapor dissipating much more quickly than smoke. If you do not see or taste any vapor, try turning the heat up just a little, wait about 30 seconds and inhale at your standard speed or use a slower inhale. We recommend to keep your standard draw speed and adjust the temperature accordingly to your inhale speed. If you inhale very fast and run a hotter unit, be careful when sharing with other people that may inhale slower than you. This could lead to combustion. Remind them to inhale like you do, or turn your unit down a little for them.
To learn more about how vaporizing works, check out The Art of Vaporizing