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    If a fragrance product contains only an aldehdye, why will it smell sour after being exposed to air after a period of time?
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    (Original post by joe_chas)
    If a fragrance product contains only an aldehdye, why will it smell sour after being exposed to air after a period of time?
    get on researching. Hint: learn oxidation of alcohol/aldehyde.
 
 
 
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