Pull your oil fill cap and look into the valve galley and look for rust on the steel parts, pull the dip stick and see if the oil level is odd or oil looks like chocolate milk. And yes, you should be concerned that the gasket failed, but you can bubble test the engine with the radiator cap or filler cap off and look for air/bubbles, making sure the system is at a proper level first. Can have a technician test the cooling system for exhaust leaks with a pressure test or checking if exhaust gas is leaking into the coolant with a test kit, or if you do some research on testing yourself.
There could be other causes, like a fuel pressure leak washing down oil into the cylinder with your adding more gas to make a lot of exhaust, or the valve seals are leaking enough to let oil into the cylinder and you're burning that with the added gas for the smoke, or luckier than a head gasket failure is an intake gasket failure.
With a 95 Camry, it would be more likely a head gasket failure, whither 4 or 6 cylinders, and it probably isn't worth having a mechanic replace it/them for $1400+, but it could be something you can explore doing yourself and not be out much if you don't succeed. I changed out a Nissan truck head gasket overnight when I didn't have a choice, wasn't all that hard with a good manual, can find most stuff on videos now.