why do old aspirin tablets smell like vinegar
The fact is that vinegar which is usually made from fermented fruit juice also contains acetic acid which is the main reason for the smell of vinegar. As the aspirin breaks down into acetic acid and salicylic acid, the acetic acid in it causes the smell to be like that of vinegar.his makes people to wonder why does old aspirin smell like vinegar. The main reason for the smell is that the composition of the drug is such that once the drug has been stored for some time, the drug starts to degenerate causing the smell.