Can I repair a chain saw chain?
One of my dad's words of wisdom to me was "Don't mess around with chainsaws."  While he meant be careful when using them, I'd say it applies here.  While you could try to repair the chain, if it caused something to bind and caused kickback while sawing, the results could be disastrous.

And new chains are cheap compared to prosthetic limbs- $20-$30.  So do yourself a favor, throw the old chain away, and buy a new one.