The fresh shwoosh sound is new to me, thanks....GG
I was rotating some canned green beans a couple of days ago, and noticed the top and bottom of one can seemed to bulge a bit. When I opened the can, it hissed and bubbled like crazy, so I dumped the contents down the garbage disposal. When I examined the bottom of the can closely I found a teeny-tiny little rust spot, must of been what caused the problem.