Likewise when I was raised in the 1950s!
In that era there were few if any plastics around so food was stored in glass or metal containers and sold in greaseproof paper or paper bags.
God knows what happened if you had a latex allergy as a child. A baby and young child's life was filled with products made of rubber and latex back then, from the teats on baby feeding bottles to waterproof baby pants, the waterproof sheets on cots and even the waterproof lining of pram hoods! Not forgetting kid's mackintoshes!
I guess you just died or lived on a diet of Benadryl (the first antihistamine, introduced in 1946)
@Paulos_the_fog what an answer! Xx