Since they're air tight you could either put 1-2 small pinholes in it or just crack it open about once every 1-2 weeks. I don't think you would need to open it since eggs use very little air. It depends on the size of the container. And mistakes are how we learn. Just a few days ago I had a mourning gecko escape (luckily I caught it), but that quickly taught me to check enclosures much better, lol.
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