Herbal vaporizers are discreet, and especially at low light vapor temperatures. But they don't do a perfect job of masking aromas completely because they still heat herbs and break them down. That characteristic smell, slightly altered, will remain, even if there is no real combustion of the grass. With your ordinary glass pipe from the mill, the burning of flowers gives off an odor that can be picked up over a wide area, immediately.
Using convection vaporizers that don't incinerate the herbs loaded in them is the most common step new smokers take to mitigate odor and mask their smoking sessions. The vapor can be almost odorless and disappear in seconds, but at higher levels you'll get thicker vapors that have a little more odor and stay a little longer. The odor of the dry herb vaporizer is much lower than that of desktop vaporizers because they vaporize at lower temperatures and less product is heated. Most portable vaporizers only heat up to 210 degrees Celsius and have a smaller bowl size.
The short answer is yes, vaporizers emit an odor. The amount of odor depends to a large extent on how spicy your herb is and what vaporizer you use. So what does marijuana vapor smell like? The exact type of scent you get will vary depending on the type of vaporizer and cannabis you use. Some vaporizers can smell just like cannabis.
Others may add compounds to create a fruity, floral, or herbal odor. In addition, the strain you use affects odor. For example, some types of cannabis in PAX Era pods have a strong pine scent, while other cannabis strains have a mild or berry smell. Although they don't eliminate the scent completely, vaporizing the oils creates an even more subtle grassy smell.
The markers create a slight terpene odor related to your strain. Milder concentrates, such as budder, smell stronger than crumble or break. In most cases, vaporizer odors disappear once the product stops producing steam, so odor control is to reduce the amount of steam in a room. Depending on the temperature, they continue to produce steam on inhalation, but they do not continue to heat the product or produce steam between inhalations.
With the Arizer XQ2 you can vaporize or diffuse your favorite essential and aromatic oils right after a steam session masking the smell a little, although keep in mind that the herbal smell will persist a little, so you may want to keep this device close to a window. Care must be taken before using a vaporizer, as vaporization will not necessarily remove each and every toxin found in vaporized mixtures. When using a vaporizer, you understand that inhaling is not recommended, as it can be harmful, and using a vaporizer is done at your own risk. This shows that the perception of others, even those who don't use vaporizers or smoke directly, seems to agree that vaporizers smell less and have less impact on others when used indoors.
Several vaporizers aerosolize compounds at slightly different rates and produce different amounts of vapor. As an active vaper, I can tell you that regardless of the smell, the vapor will not stay in your room as long as cannabis smoke would.