Yes this is a must. We should wash the outer surfaces of all kinds of canned food and soft drink containers with soap and water before opening them so that to avoid their content contamination by way of any possible contact with dirt or dust that may be present on the container’s lid or outer surface.
On the other hand, it is also necessary to get rid of any bloated or ballooned can or that which shows any protrusions or which was exposed to any shock. Moreover, we should not heat any canned food by way of putting it directly on the fire or in the microwave. Finally, we also should not consume any canned product if ever we notice any change in the color of the preserving fluid that’s initially contained in the can or if its smell became unpleasant or its color became unusual.