Due to the absence of other impurities and a low heating temperature (300 degrees), the exhaled steam is almost instantly dissipated, leaving no smell on things and hair. Thanks to that IQOS smoking is not prohibited even inside of the building.
The main difference between Amber and Yellow is the level of saturation. As for the taste and aroma, the differences are so small that they are quite difficult to feel. Both types of cartridges are similar to regular cigarettes. They are most similar to the Parliament.