I still have some of the first Tupperware I bought - it's nearly 50 years old now. Measuring cups, lettuce storage, canisters. Only a couple of storage containers. I keep an onion, cut in half, in one of them. It never ever, allows the smell of onion to escape and stink up the rest of the refrigerator.
I don't heat anything up in plastic. Now, if only I could convince DH to follow that rule.
