I worry all the time about canned foods. I always listen for them
to go psst! when I open them to make sure they were vaccuum sealed but
I notice that I'm the only one that does this around my house.
What if someone opens a can that doesn't suck in the air? How do
you know it's safe? There are a lot of cans i've thrown away
because I didn't hear the vaccuum when I opened it and I KNOW somewhere
in my mind it was safe. Can anyone help me out with this?