Question

Oil foods become foul smell after some days. Give reason​

Answer 1

Answer:

Due to oxidation.

And also due to various microbes presnt in air contaminate the food

Answer 2

Answer:

Food turns rancid when the fats and oils within them get oxidized and the taste and smell of the food changes.Oxidation of fats generates highly reactive molecules in the rancid food which is responsible for the unpleasant odour and flavour. These chemical reactions also reduce the nutrition of the food.