My mom is having a double mastectomy done today, and my fiancee has been sick with the common cold for the last two weeks. is it safe for her to be around my mother? if she wears a face mask?

Common cold: The common cold is usually harmless but in the case of your mother who will be just out of a large surgery i would suggest she avoid your fiance till he is over his cold.

Common sense: It should be fine, but use common sense - avoid prolonged close contact and use hand washing liberally. The cold should be winding down after two weeks anyway. You could consider a mask, especially if there will be close contact, but otherwise in not sure it will matter much. Hope this helps!

Yes: You mom needs all the support, every one should take required precautions including hand washing.

Face masks: Do not prevent cold virus transmission. Hand washing and limiting direct contact are reported to be somewhat effective. But cold viruses are highly contagious.