Take the smallest pilot hole drillbit you have (1/16" or 1mm) and drill 5-8 holes in the bottom of your trash can. This not only allows the air to escape as the bag fills up, but also makes it easier to remove the trash bag later.
I’ve done this with two trash cans now and recommend it to everyone.
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Might want to do it on the sides instead, about half an inch to an inch from the bottom. If a bag tears and it has liquid, you might avoid having to clean up the bin and what’s under/around it.