Do you maybe have any kind of Hammerstrength equipment (plateloaded) or something similair. Those machines can be beneficial, if you make sure that you keep doing db/barbell press. And what about oldfashion dips? Oldschool upperbody massbuilder.
Why don't you start trying doing barbellpresses. 220 lbs on your chest doesn't hurt, even 310 or higher doesn't hurt, as long as is doesn't drop on your chest.
And I haven't seen anything like that happening over the last 10 years. Usually you can't lift, gently put it on your chest, en start screaming, as long as you can breath, or other strange happenings, try putting the barbell on the side, try rolling it to the front,
but nobody injured.