Re boiling cooled wort

[Sandvik]

I just made a 10 gallon batch and pitched yeast from a starter I made 2 weeks ago. I thought the starter smelt good at first but now i'm smelling sulfur hints. The yeast is wyeast 1272 and I have used it before but it smells different .
I'm going to reboil for about 15min to hopefully kill that yeast ,will this change my beer in any way?

 

[bpgreen]

I wouldn't boil it.

Yeast will sometimes produce sulfur smells.

Let it ferment out.