(n.) The act of depriving of odor, especially of offensive odors resulting from impurities.

aeration aerification antisepsis atomization decontamination deodorization deodorizing disinfection disinfestation distillation etherealization etherification evaporation exhalation flash pasteurization fluidization fractionation gasification hygenics hygiene pasteurization sanitation smoking steaming sterilization sublimation vaporization ventilation volatilization