Anyone here do this? How does it work for ya?

Also what are the opinions of plastic storage here? Like tupperware etc? it's all made out of forms of plastic which I heard isn't good for ya? So whats the word? I have a rival seal a meal, yet becuz of the plastic info I have yet to use it? I read that, If its liquid and stored in plastic it's bad... Then i read that even if its dry the plastic lets off gases. So many conflicting views..