Since eggs are perishable food items, they need proper storage. They should be kept cool and dry. Maintenance of the egg's internal quality depends on the time and conditions of storage, especially the temperature and the presence of tainting substances in the storage environment. Eggshells are porous and eggs can quickly absorb foreign odours which will taint the contents. It is therefore advisable to avoid storing strong-smelling and volatile materials such as kerosene or varnish near egg stores.