Odor in water can be caused by a variety of materials, both natural and foreign, in the water body Odor tests are made by using the human sense of smell, whereby a panel of "testers," each person in turn, sniffs dilutions of a water sample until that dilution with the least but definitely perceptible, odor to all on the panel is determined
Odor is a sensory reaction to vapors inhaled through the nostrils The odor of fresh fats should be bland and neutral or may be unobjectionable but characteristic of natural oil
A gaseous airborne chemical complex having recognizable and distinctive characteristics as measured by physiological response by the nasal olfactory system