“Sensing odors” is one of the ways for humans to detect the various changes outside the body using the sense of smell among the five senses. Although there are hundreds of thousands of kinds of odor components on the earth, we can extremely sniff out many of these odor components easily. Generally, odor evaluation methods can be roughly divided into the sensory evaluation -subjective evaluation, and the instrumental analysis - objective evaluation such as odor/gas sensors and GC/MS. However, these evaluation methods have advantages and disadvantages, therefore we can see the sniffing-GC/MS these days, which are combined both subjective and objective evaluation for an accurate evaluation. This review introduced an overview for the mechanism of detecting the odor components, and especially focus on hot melt adhesives for controlling the various odor. A slight amount of VOCs and/or odor components are generated from these hot melt adhesives. We tried to remove the VOC/odor components from the hot melt adhesives using novel odor removal technique so called M-ZeroTM method.
