Question

A hole in chips packet gives unpleasant smell

Answer 1

Because the nitrogen gas which kept in packet release slowly slowly because of small hole which gives unpleasant smell and because of rancidity....

Answer 2

This is due to the spoiling or oxidation of food or the phenomenon of Rancidity of food wid oil containing..it...
due to the hole in the packets the air oxidized the food and now it has completely become unhygeinic to be consumed...