after not having mayo in the house for about a year, I decided to get one as I had extra eggs nearing expiration that I was going to make into egg salad sandwich.

I bought Hellman's squeeze type. It had this plastic heat-shrink wrap thing where I peeled off the top part to get at the lid. There was no seal or anything under the lid and it was just there, ready to be squeezed. Here I'm thinking there's no air tight storing in place, and it was sitting on the shelf at the store. How do I know this is safe? I had a bit last night and I'm still alive, but I'm really leary of eating the eggs today for lunch.