The newer pressure cookers will not “blow up” per say- they have rubber relief plugs that will blow out so they don’t. One of my daughters blew out a plug while cooking beans, the juice sprayed out of that thing in a fine mist of bean juice all over my kitchen. It would have been hazardous if someone had been close enough to get hit by the hot spray as it left the cooker but we were lucky there. We had to scrub every inch of kitchen and everything in it and still I found places and things later that we missed. Worst mess I ever dealt with.
Yes, mine has a rubber plug but I don’t trust it so I never leave it while it’s in use and when the husband or granddaughter hear it whistling they stay clear of the kitchen. I’m sure my grandmother was using one of the old ones because it’s been years and years ago. The horror stories of exploding pressure cookers have been handed down from mothers to daughters for years because they were so dangerous. I started canning food when I was about 14 and so far so good.