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No blood, yes swimming goggles should suffice. Just be careful if you plan on leaving the cap on. It could go off like a gun.

BTW

It says Extreme Graphic Content, It lied, nothing to fear there.

YouTube - Diet Coke+Mentos=Human experiment: EXTREME GRAPHIC CONTENT

Be careful if you want to eat them or swallow them.

I imagine once the coke is out of carbonation, its reaction is...